What UK Phone Book actually holds
UK Phone Book, operated by Simunix in York, claims 130 million records. That number sounds enormous for a site most people have never heard of, but it becomes less surprising when you look at the sources: the open electoral register, BT’s OSIS telephone directory, Companies House filings, Royal Mail’s Postcode Address File, and Ordnance Survey mapping data.
The site also powers the 118 365 directory enquiry service. So even if you have never visited ukphonebook.com directly, your data may have been served to callers through 118 365.
In my experience mapping digital footprints, UK Phone Book is one of the more overlooked sources. People focus on 192.com because it ranks higher in search results, but UK Phone Book’s 130 million records cover a significant slice of the UK population. If you are listed on the open electoral register and have not gone ex-directory, you are almost certainly in their database.
How to remove your data from UK Phone Book
The removal process goes through ukphonebook.com/help. Submit your details and request deletion. Online processing takes up to 2 working days. If you contact them by post, allow 28 days.
A few things I have learned from submitting these requests:
- Be specific about which records you want removed. UK Phone Book may hold multiple entries for the same person across different addresses and phone numbers. If you have moved in the last decade, you likely have historical listings too.
- Confirm exactly what data you are asking them to delete. Name, address, phone number, and any linked directory listing.
- Keep a screenshot of your listing before submitting the removal request. If they fail to comply within the statutory one-month deadline under UK GDPR Article 17, you will need evidence of what was there.
Frame your request as a formal erasure request under UK GDPR Article 17, not a polite ask. UK Phone Book’s data processing relies on the open electoral register and directory data, and while they may argue legitimate interests for business listings, personal residential data is straightforward to challenge.
Going ex-directory: the step that does the real work
Removing yourself from UK Phone Book directly is necessary, but the single most effective action you can take is going ex-directory with your telecom provider. All UK telephone directories, including UK Phone Book, derive their phone data from OSIS (Operator Services Information System), managed by BT Wholesale. When you go ex-directory, BT removes your number from OSIS, and that removal cascades to every 118 service and online directory simultaneously.
For BT customers, call 0330 123 4150. For everyone else, contact your provider directly and request ex-directory status.
About 65% of UK numbers are already ex-directory. If yours is not, fixing that single source eliminates your phone data from UK Phone Book, 118 365, 118 118, and every other directory service pulling from OSIS. I have seen this cascade work within days across the full 118 ecosystem.
Most people think going ex-directory is something their grandparents did. It is actually the most powerful single action in the entire UK data removal process for phone number exposure.
The five-step suppression most privacy advice misses
Removing yourself from UK Phone Book alone, or even going ex-directory, still leaves gaps. Complete phone directory suppression requires five steps:
- Go ex-directory with your telecom provider (cascades removal from OSIS to all 118 services and online directories)
- Remove from ukphonebook.com via their help page (catches any cached or historical data Simunix holds independently)
- Register with TPS at
tpsonline.org.uk(legal requirement under PECR 2003 for companies to screen before making marketing calls, takes 28 days to activate) - Unlist from caller ID apps (TrueCaller at
truecaller.com/unlisting, Sync.me atsync.me/unlist/, and Hiya via account creation and support ticket) - Request removal from 192.com (separate process, because 192.com holds its own electoral register and directory data independently of OSIS)
I have assessed hundreds of digital footprints and the pattern is consistent. Someone goes ex-directory, checks UK Phone Book a week later, sees the listing is gone, and considers it done. Then their number is still sitting in TrueCaller’s database, still searchable on 192.com, and still receiving marketing calls because they never registered with TPS.
Each step addresses a different data source. Going ex-directory handles OSIS. UK Phone Book removal handles Simunix’s cached records. TPS registration creates a legal obligation for marketers under PECR 2003. Caller ID app unlisting removes crowdsourced data that operates completely independently of the directory system. And 192.com holds its own copy of everything.
Caller ID apps: the source nobody thinks about
TrueCaller, Sync.me, Hiya, and the UK-specific Wotcha all build their databases from user contact uploads. When someone installs TrueCaller and grants contact access, every number in their phone book gets uploaded to TrueCaller’s servers. Your name, your number, and whatever label they saved you under (“Aaron Work”, “Dad Mobile”, “Sarah Landlord”). None of that comes from OSIS. Going ex-directory will not touch it.
You need to unlist from each app individually:
- TrueCaller: Visit
truecaller.com/unlisting. Processing takes 24 hours. - Sync.me: Visit
sync.me/unlist/. Also straightforward. - Hiya: Requires creating an account first, then submitting a support ticket. More friction than the others.
- Wotcha: UK-specific app with a 99% recognition rate for UK numbers. Contact via the app directly.
Wotcha is the one that gets missed. It is UK-focused, which means its coverage of UK numbers is disproportionately high relative to its user base. Most removal guides written by US-based services do not even mention it.
TPS and MPS registration
The Telephone Preference Service (tpsonline.org.uk) is free and creates a legal obligation under PECR 2003. Companies must screen against the TPS register before making marketing calls. Register both your landline and mobile numbers. It takes 28 days to activate fully.
The Mail Preference Service (mpsonline.org.uk) is self-regulatory rather than legally binding, but 5.4 million people are registered and most legitimate mailers observe it. It covers personally addressed mail only, so it will not stop unaddressed junk.
Neither of these removes your data from anywhere. They create barriers to future contact. That distinction matters.
What UK Phone Book removal does not fix
Removing your data from UK Phone Book and going ex-directory sorts the telephone directory layer. But your address is likely still on the open electoral register, feeding 192.com, PeopleTraceUK, and Tracesmart. Your name may sit in Companies House filings, credit reference agency marketing databases, and the invisible commercial broker layer that most people never discover.
UK Phone Book is one node in a network. Removing from it is necessary. Stopping there is not a privacy strategy.
If UK Phone Book ignores your request
They have one calendar month to comply under UK GDPR Article 17. If they ignore you or refuse without valid grounds, escalate to the ICO at ico.org.uk. Your GDPR rights apply cleanly here because UK Phone Book processes personal data from the open electoral register and directory listings, neither of which requires ongoing retention for your individual records.
Since the Farley v Paymaster ruling in 2025, compensation claims for data protection breaches no longer require a threshold of seriousness. A County Court claim starts at 35 pounds. The economics have shifted in the individual’s favour, and data brokers are starting to take notice.
If you want help mapping your full exposure across all UK data brokers and building a removal strategy that actually holds up over time, get in touch.
