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A Reverse Telephone Lookup Of Unwanted Calls is a free reverse telephone database of phone numbers reported to be from telemarketers, scammers, and bill collectors for the United Kingdom. Over 20,743 complaints have been reported to date.

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London, England

Did you get a call from 020-7890-9051?  Read the comments below to find out information about this number. You can also report unwanted calls to help identify callers.

June 16, 2014, 4:36 am

Mumbling baffoon who was trying to do a financial survey. Probably an Indian who doesn't even live in the UK with a terrible accent I can't make out at all.

Caller Company: Financial Survey
Caller Type: Survey
Reciever of PEST CALLS
October 17, 2014, 10:21 am

This number called after 7.30pm trying to do a survey. Told them not interested as they were invading my privacy and that the telephone number they had was Ex Directory - Why and how does this happen when I do not give my number out to anyone or either list on any documents that request it. The number is with held from the Polling regisgter

Caller Company: didn't get it
Caller Type: Survey
October 22, 2014, 10:14 am

THIS IS A SCAM! There is no such government dept. as Dept of Energy & Climate Control (which they say they are calling from). The correct name of the department ends in 'Change' not Control. Trying to bamboozle people into thinking they are legit when they most certainly are not.

Caller Company: Department of Energy & Climate Control
Caller Type: Scammer
November 8, 2014, 5:21 pm

To be fair i did recieve a letter from someone saying i will get a phone call from the government dealing with energy prices. i read peoples comments on here about climate change so maybe it is authentic either way idc.

Caller Company: didnt answer
Caller Type: Survey
November 12, 2014, 9:51 pm

I received a call fom this number, but didn't answer. I have also had an email a few days prior saying that a company called CMA were using a company called GfK to conduct research on gas & electric companies, and that they'd written to my energy provider to get my details, using their legal powers. I'm quite disappointed that my energy company can give my details out for what essentially sounds like market research.

Caller Company: 020 7890 9051
Caller Type: Unknown
November 15, 2014, 11:35 am

GFK called apparently doing a survey on Cars I told the guy I was just about to leave the house but he didn't want to take no for answer! Like a previous person I really would like to know how these TELEPESTS get private numbers!!!

Caller Company: GFK
Caller Type: Survey
December 15, 2014, 7:06 pm

Indian accented man conducting a survey on energy usage for the government and energy companies.

Caller Company: Energy
Caller Type: Survey
February 10, 2015, 5:56 pm

Just recieved call. Asked for me by name. I asked who was calling. Agent said "just doing a survey". I put the phone down.

Caller Type: Unknown
February 14, 2015, 2:18 pm

Got the phone call today. Indian accent. Claimed to have had my details passed to GFK via my Bank, who had been asked by a UK .Gov dept
Had the whole of my name.
Told him I wasn't doing their survey. Called my Bank, who said they had NOT passed my details to anyone.

Caller Company: GFK
Caller Type: Survey
Emma Carter
February 16, 2015, 8:56 am

Constantly spend most of their day calling me. Now put them on reject list. Answered once was an indian man. Put phone down they are now calling me on another 020 number so added that to block list. Wish after one try they would give up but 8 calls a day is ridiculous.

Caller Company: 020 7890 9051
Caller Type: Unknown
Michael Moseley
February 24, 2015, 6:02 pm

My wife received at call just before 6.00pm this evening, with the caller asking if she was....and reading out her name in full, including middle names. We are ex-directory, so how did they know both her name and phone number, which we never give out other than to OFFICIAL sources?

Caller Company: They wouldn't give a name
Caller Type: Survey
February 28, 2015, 7:45 pm

Those creeps posing as CMA rang but I don't pick up unknown calls -- thanks to this website I checked the number and see others are getting these scam calls. I had one of their letters first. If CMA exists as a government agency then they had better find out where the scammers are because they are fraudulently using the real phone number on their bogus letters.

My bank says they'd never give out my details. Like the others my full name appeared on the letter. Who is selling our details, names, phone numbers? Police need to investigate.

Caller Company: Posing as Joanna Benison
March 11, 2015, 4:52 pm

GfK UK. Information for the general public
How can I check that a call claiming to be from GfK UK is authentic? If you have just been called by GfK UK and asked to participate in a telephone survey you can check this call
is genuinely from us by calling 1471 to find out the number of the Call Centre from which you were called. Or if you have the facility, you can view the number on Caller Display. The numbers you will find are:
020 7890 9051

This is the Caller Line Identification (CLI) number of o
ur Telephone Interviewing Services
(TIS) call centre based at 66
68 Alma Street, Luton, Beds, LU1 2PL.
020 7890 9052
This is the CLI number of our TIS call centre based at 5
Floor, Hannibal House, London,
SE1 6TE.
If we have called your Mobile Phone
Number, the CLI displayed may be one of a range f
rom 07468477277 to
If you dial any of these numbers you will hear a short message confirming that GfK UK has called you. As we
make many international calls the CLI number you receive may be p
refixed with the UK dialling code of 0044,
e.g., 00442078909051.
Please note that if you are registered with the Telephone Preference Scheme this only prevents marketing
calls and will not prevent market research calls.
Please note, if you are called f
rom one of our call centres, the call may be recorded for quality and training
purposes. Recordings are deleted after one month, unless you have given your permission for us to keep
them longer

March 11, 2015, 7:37 pm

Female with british accent called me today at 19:30 stating wasa company called GFK doing a financial survey. Said the banks had handed over thousands of phonenumbers due to goverment policy and mine was picked at random. Said even i fi had opted out of receiveing marketing teh bank have to give my number to them,. Told her i wasm=n't interested in the survey she apologised for disturbing me and said have a good evening. Seemed a very strange call if i'm honest

Caller Company: GFK
Caller Type: Survey
April 22, 2015, 7:58 pm

Received a call asking for my grandson by name. After a few words caller said she would 'call back in May.'
The caller sounded to be a young British woman with a London accent - called at 19.20 hrs. 22/04/15.

Caller Company: Not known
Caller Type: Unknown
April 23, 2015, 10:23 pm

Been ringing the past several weeks until I answered and the man said he wanted to do a survey. what type of company are they calling after 6pm. A SCAM!!!!!

Caller Type: Survey
April 28, 2015, 7:09 pm

exact same as 'Michael' above. Asking for my son by name. I asked whose calling and she spoke quickly something about a learning course, and she would call back another evening.

Caller Type: Unknown
May 2, 2015, 1:53 pm

They called me on a Saturday at 10:30 am. 02:05:2015 My number is unlisted and I do not give it to anyone. Also I am registered with the people who are supposed to prevent these calls or the caller gets fined 2000. I told them to call me back later, and then I blocked their number. The caller was female and polite.

Caller Company: They did not say 02078909051
Caller Type: Survey
May 3, 2015, 5:41 pm

Got a call from this number at 17.30 today (Sunday!) and the female said she was calling from GFK regarding a financial survey. As she paused her prepared speech to take a breath I quickly said I wasn't interested, apologised and ended the call. Like many others on here I am ex-directory and registered with the TPS. If that doesn't prevent market research calls (as per their pasted statement above)then it flippin' well OUGHT TO! I've now marked the number on my phone so it will be ignored next time......still a nuisance though :(

Caller Company: GFK
Caller Type: Survey
May 15, 2015, 3:00 pm

I have given up answering my BT landline leaving the answer phone on, hearing the sad news yesterday about the lovely 92 year old lady who had enough. My phone has just been ringing again from the above number !
Can this abuse not be stopped. I even get txt messages and calls to my mobile which I depend on for contact with family being housebound.

May 26, 2015, 6:47 pm

I received a call on my mobile at around 6:30pm on Tue 26th May from a young, London-accented female claiming to be from GFK, and was conducting a survey on the EU Commission ... I stopped her spiel to ask her where she got my number from (I only disclose it to a select few) and she said it was randomly generated, ie taken from a 'phone book' (though I'm not in any phone book) and the last two digits reversed. Needless to say this number is now in my reject list.

Caller Company: GFK
Caller Type: Survey
M Cooper
May 28, 2015, 10:44 pm

We have had repeated calls from this number asking for my daughter. On asking what it is about they mumble something about education but cannot discuss further due to data protection but it was again for a survey? Very strange and VERY annoying!

Caller Company: 02078909051
Caller Type: Unknown
May 29, 2015, 7:31 pm

i received a call from this number at 1920 regarding a survey i said i was not interested and he said could he speak to someone else as i am ex directory i am annoyed to receive a call from anyone who isnt known to me at this time of night whether they are genuine or not.

Caller Company: didnt catch the name
Caller Type: Survey
May 31, 2015, 8:53 pm

Received a call from this number tonight,no one calls me as I am not able to speak clear so only receive texts but worried me as to who it may be.
Pleased for your site to be able to find out just another survey call. What can you do when you are ex directory and also registered on the site that is meant to stop these calls?

Caller Type: Unknown
June 2, 2015, 6:51 pm

Just had a call from "GFK" as others have mentioned. The call came at 6:45 tonight and the chap was polite and accepted that I was, (genuinely), about to leave.

Caller Company: GFK
Caller Type: Survey
June 3, 2015, 7:41 pm

Call at 7:30pm from a woman saying she is doing a survey for an EU commission in to products and services. Told her i was busy and she politely hung up.

Caller Type: Survey
Concerned mum
June 20, 2015, 6:32 pm

My 10 year old son received 2 calls from this number today on his payg mobile, claiming to be a government department. He told them he was 10, to go away and hung up. How on earth do they get the mobile number of a child?

Caller Company: European Department of climate control
Caller Type: Scammer
June 21, 2015, 11:34 am

Most of these callers are spam and having a ex directory service mean nothing when the caller just needs to change a few digits of any phone number and randomly ring your number.

Let them ring me, they are wasting their time, not mine.

Caller Company: European Department of climate control
Caller Type: Spammer
June 21, 2015, 1:30 pm

Received a call from this number in the afternoon. The guy asked straight away if I was driving or if I was in a vehicle and his call was putting me in a dangerous situation, without even introducing himself. I asked him to say that again because I really didn't get what he wanted actually to know. He just repeated the same sentence, I asked who he was and where did they get my number from and with a very annoyed tone he said that was doing a market research and again asked if I his call was putting me in a dangerous situation. I said that it was not dangerous but it was interrupting my lunch break so asked him to calm back another time. They did, but obviously I didn't pick up.

Caller Company: Gfk
Caller Type: Survey
June 21, 2015, 5:08 pm

I got called yeaterday said i was busy after they wanted me to do a survey, something about staying in the e.u. they juat rang me.again now i just ignored it and will be adding the number to my block list havnt got time for scum bag scammers.

Caller Company: unknown
Caller Type: Spammer
June 21, 2015, 8:01 pm

I answered the call with "Coventry Fire Station" and they promptly put the phone down.

Caller Company: 020 7890 9051
Caller Type: Spammer
July 12, 2015, 12:10 pm

Just had a call from this number on my fixed line. He gave my surname and asked if this was correct. I replied it was correct and the call was then stopped, so I don't have any idea how they got my number or what they wanted. But calls like this, on a Sunday morning, are a bit spooky!!

Caller Company: Not known
Caller Type: Unknown
August 10, 2015, 7:28 pm

I have just recieved a call from this number on my mobile at 7.25pm. im in ireland so not sure why they were calling it how they got my number.. polite man but call was breaking up all I heard was energy and survey I just hung up..worried it may be a scam.

Caller Type: Unknown
September 2, 2015, 5:41 pm

Got missed call from this number today on Viber - I'm in Ireland so not sure why they would be calling me... Called it back and got a voicemail from GFK. Sending them a mail telling them to remove me from any lists they have. Really annoying as don't know what it was about or how they got my number

Caller Company: GFK
Caller Type: Unknown
September 7, 2015, 4:26 am

Female caller who told me right away that she wasn't selling anything. She just wanted to ask me questions about financial services and my degree of happiness with the customer experience.

Caller Company: GFK
Caller Type: Survey
October 1, 2015, 8:53 am

Had a call some woman claiming from GFK wanting to speak to my wife about products she has from them,when I asked for more details as to what products she told me it was costumer confidentiality and put the phone down.

Caller Type: Survey
October 30, 2015, 6:35 pm

I do not answer any number that I do not know. I check the number on my computer and if it has no bad reports I would phone it back to see who they are. However most do have bad reports so I don't bother to phone them back.

Caller Company: No Idea as did not answer
Caller Type: Unknown
Kevin Carter
November 15, 2015, 10:41 am

Thank you for your help. I don't care if GFK is a credible company. I do not want to do any telephone surveys and I do not want companies cold calling

Mrs Whitehurst
November 23, 2015, 8:54 pm

Caller asked for me by name then asked if I was driving or using machingly when I said pardon she repeated the question. .. I then told her I wasn't telling her anything or answering her questions at this time of night 845pm or any other time day or night

Caller Company: Doing a survey
Caller Type: Scammer
December 8, 2015, 9:16 pm

Caller phoned my mobile at 20.00pm asked for me by name said he was conducting a survey about a car i recentley purchased and he told me the make of the vehicle i purchased.After i answered a few questions he told me a telephone no i could ring to confirm who he was and where he was ringing from which was a 0500 number.At the end he asked which part of the country i was from i told him a completley wrong answer so i basicaly played him along would like to know how they get private numbers and information that only you should know about

Caller Company: Doing a survey
Caller Type: Survey
TPS registered
March 26, 2016, 11:59 am

Received a call saying they were doing financial marketing. On Easter Saturday. We are registered with the Telephone Preference Service so this company is illegally making such unsolicited calls.

Caller Company: Not given
Caller Type: Telemarketer
December 21, 2016, 10:31 pm

called me several times, I always miss the calls because they are between 7-8pm or 1-2pm so I am busy. Flipping pain really. Think they are trying to get as mush info on you as possible then probably sell the info you give them to who ever they can.

Caller Company: 02078909051
Caller Type: Survey
Michelle Pant
June 28, 2017, 8:02 pm

Didnt recognise this number which called about 7.30 pm today. Checked the number out and was glad that i hadnt answered!

Caller Type: Unknown
September 18, 2017, 7:29 pm

Just bought a phone for my son's birthday last week. New phone, new sim card.
This number called him this evening. He didn't answer, which I'm now very pleased about.
But the point is - my boy is 10, and we don't live in the UK. WTF.

November 14, 2018, 6:56 pm

Just called by this number by an Indian sounding man wishing to talk to me about my bank account. Checked with bank. They made no such call. He got no details from me i just hung up as he sounded very strange!

Caller Company: Bank
Caller Type: Scammer
August 21, 2020, 9:11 am

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Caller Company: google
Caller Type: Political Call
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Caller Company: google
Caller Type: Prank Call
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Caller Company: google
Caller Type: Legit Caller
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Caller Company: google
Caller Type: Non-Profit Organization
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Caller Company: google
Caller Type: SMS
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Caller Company: google
Caller Type: Fax Machine
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Caller Company: google
Caller Type: Unknown
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Caller Company: google
Caller Type: Legit Caller
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Caller Company: google
Caller Type: Spammer
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Caller Company: google
Caller Type: Legit Caller
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Caller Company: google
Caller Type: Fax Machine
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Caller Company: google
Caller Type: Survey
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Caller Company: google
Caller Type: Telemarketer
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Caller Company: google
Caller Type: Political Call
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Caller Company: google
Caller Type: Spammer


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