Market research and surveys
IFF Research phone numbers
Edited by Richard BarkerChecked 14 October 2026
IFF Research publishes 1 number for you to call on its own website. We list each one with the page it is on (1 page in all), a short quote from that page and the date we checked it.
Numbers to call IFF Research
What each line is for, as IFF Research describes it, with opening hours where it gives them.
- 020 7250 3035
You call them on this number
Main office
Source: “65 Southwark Street London SE1 0HR 0207 250 3035” (opens in a new tab). Checked 14 October 2026.
How scams that copy market research and surveys work
Genuine research firms do call people, which is why their numbers are worth checking. If a "survey" call asks for your bank details, a payment or a code sent to your phone, hang up.
Ofcom says scammers can fake the number that appears on your phone, which is called spoofing, and that they imitate UK numbers to look like a trusted person or organisation. Knowing details about you does not make a caller genuine.
This could still be a scam call
Criminals can make their number look like a genuine one (this is called spoofing). If someone calls from this number and asks for money, bank details, a code or passwords, hang up. Then call IFF Research back on a number you've found yourself, such as the one on their own website or on a letter or bill from them.
Safe ways to check
- IFF Research's own contact page (opens in a new tab): Where this number is published.
- Report Fraud (opens in a new tab): Report fraud and cyber crime in England, Wales and Northern Ireland. In Scotland, call Police Scotland on 101.
- Forward scam texts to 7726 (opens in a new tab): It is free, and reports the message to your mobile provider.
- How number spoofing works: Why a genuine number on your screen does not prove who is calling.
Questions about IFF Research’s numbers
What numbers can I call IFF Research on?
IFF Research publishes 1 number for the public to call. They are: 020 7250 3035 (Main office). Check the source page for each one before you call, as numbers and opening hours change.
Does IFF Research publish a number on its own website that is not listed here? Suggest a number for IFF Research.
Sources and checks
This page relies on:
Checked on 14 October 2026. Read how we build the directory. How we check our information. Spotted a mistake? Tell us and we will put it right.