• Q. Why can't I find my phone number?

    About 70% of residential telephone numbers are ex-directory or unlisted.

    Other reasons include:

    • Spelling errors in your listing.
    • You made a spelling error in your search.
    • Your phone number is listed in your partner/spouse/house-mate's name.
  • Q. What data is included in your phone book?

    We receive a daily update from every UK telecom licensed operator that contains all listed white pages telephone numbers. Very few mobile phone numbers are listed anywhere.

  • Q. Is your data compliant with the General Data Protection Regulation (GDPR)?

    Simunix provides data to their customers from a number of licenced and permissioned sources. These are:

    • BT OSIS
    • Companies House
    • The Edited Electoral roll
    • Royal Mail
    • Ordnance Survey
    • Land Registry
    • Consumer Data

    Additionally, Simunix can check all the records produced from these sources against the TPS and CTPS registers, which are updated daily.


    (Please note: The following information is based on our understanding of the GDPR legislation and should not be interpreted as legal advice).

    It is important that your business understands its responsibilities under the GDPR when conducting a marketing campaign using any of the above data sources.

    Under the GDPR, direct marketing can be categorised as a legitimate interest, however, the campaign must be conducted in such a way that will not override the rights of the data subject.

    Your business will need to run a balancing test to determine whether the rights of the data subject will not be overridden by your direct marketing campaign. Any measures that are implemented as a result of your balancing test will need to be documented internally so that they can be produced upon request. For example:

    • If you are marketing through sales calls, are the telephone and mobile numbers TPS and CTPS checked?
    • Do you apply an internal suppression against the customers that you have already marketed to?
    • Do you have clear rules in place regarding data retention and deletion?


    Any complaints from data subjects regarding their inclusion should be directed back to the supplier:

    • Their Local Authority
    • Their telecoms provider

    Entries in Companies House and the Land Registry are in the public domain.

    If required, Simunix can help you trace the data source to ensure the complaint is channelled to the correct supplier.

  • Q. What other searches can you do on ukphonebook?

    Our service was originally just a telephone directory – hence the name. But over the years, we have added many more sources of information.

    Phone Numbers
    BT is the major provider of telephone services in the UK, but not the only one. Our telephone directory is updated every day with information from ALL of the UK telephone operators like KCOM, Virgin, BskyB, Talk Talk Group etc.

    The UK, unlike the USA, does not have a formalised addressing system. This means that it can sometimes be difficult to identify the correct postal address for a given location.

    By 1974, every delivery address had been allocated a 'Postcode' and our service uses data from The Royal Mail (Postal Address Finder) and Ordnance Survey (AddressBase) to provide a means by which you can identify correct address and postcode information. It also provides geographic location information in the form of 'Northings' and 'Eastings' – a system in common use by businesses in the UK.

    Electoral Roll
    Every person of voting age in the UK is required to register with their local authority for the Voter's Roll or Electoral Roll as it is known. This information is used by public bodies and licensed credit reference agencies to provide information on persons over the age of 18.

    A 'sub-set' of the full Electoral Roll is the Edited Electoral Roll. This is derived from the full Electoral Roll, but individuals who prefer their information not to be made public can choose to have their record supressed. It is The Edited Electoral Roll (plus information from certain other consumer databases) that is available to our users.

    Area Codes
    The UK telephone system is divided up into a network of Exchanges. These exchanges are situated near to population centres and all landline telephones are connected to a local exchange. In order to route your telephone call effectively, each exchange will be linked to an area (or STD) code.

    You can use our service to identify the correct area code for a city, town or village OR identify the cities, towns and villages served by a particular area code.

    Company Information – Director Search – Credit Reports
    We obtain detailed company information from various sources including Companies House, CreditSafe, Intelligent Data Group and others to provide a comprehensive search and reporting service on businesses and company officers (Directors, Company Secretaries etc.).

    Use this service to identify the registered information on businesses throughout the UK, identify the individuals responsible for that firm's governance and produce (where available) a detailed credit report and credit-worthiness rating for the business.

    Internal Directory
    We offer the facility to our commercial users to have their company's Internal Telephone/Contact Directory incorporated into the ukphonebook service. Please contact us for more information on this service.

    ZoneSearch is a powerful marketing tool that allows a user to create marketing lists of people and/or businesses that they may wish to promote their business or service to. The information provided may include Name, Address, Telephone Number, Fax Number, Email Address, Business Contact Name and far more.

    It is open for anyone to use and completely free to register and generate lists. Payment for the data is by credit card or invoice (subject to credit check). Please contact us for further information or to apply for a credit account with us.

    The Telephone Preference Service (TPS) is the official central opt out register on which you can record your preference not to receive unsolicited sales or marketing calls. It is a legal requirement that all organisations (including charities, voluntary organisations and political parties) do not make such calls to numbers registered on the TPS unless they have your consent to do so.

    Use our service to check individual numbers or upload your entire tele-marketing file to bulk check your numbers and have the file downloaded to you. It is a legal requirement for tele-marketers to screen their customer file at least every 28 days.

    or 'bulk-processing' is an automated service we offer which can update and verify your customer database.

    Direct marketing can be very expensive so it makes sense to ensure that your customers are still 'live' and the information you have is current and correct. With our fully automated Teleappending service, you simply upload your file (in .csv format), match the headings correctly and click the 'Process' button. Please contact us for more information on this service.

    Google Maps with full-screen access to Street View is included free of charge – but with a difference.

    Every Name and/or address record includes a link to the maps with the ability to send those details and the map link to a friend or colleague via email or text message. Invaluable if you're involved in setting up meetings etc.

    Land Registry
    We have integrated information from the Land Registry with our own data sources so that you can find title deeds (including plans) as well as contact information for the owner(s) of a property.

  • Q. How current is the data?

    The data is updated daily and updates include such things as amendments to existing records, newly inserted records and the removal of no longer required records - If the phone number is listed, we have it.

  • Q. Do I need to use capital letters?

    You can enter text as uppercase or lowercase, searches are not case sensitive. It will also ignore any punctuation e.g. O'Neill will be treated as oneill, d'arcy will be treated as darcy.

  • Q. Can I perform wildcard searching?

    Yes. A wildcard is a character that forces the search to ignore part of the input. Suppose you were looking for someone called John Martinson. If you enter mart* in the surname box, the search will return the following names: Martin, Martindale, Martinez, Martini, Martins, Martinz, Martlew and Martyn.

  • Q. I cannot find somebody that I know is on the electoral roll.

    Unfortunately data protection regulations in the UK mean that we are not permitted to show the full electoral roll. We show the edited electoral roll, in which voters may choose to not be listed.

  • Q. Can my personal data be removed from this site?

    We acquire information from a number of licenced and 'opted-in' sources.

    These are:

    • BT OSIS
    • The Edited Electoral roll
    • Consumer Data
    • Companies House
    • Land Registry

    If you would like to remove the information that relates to you, you will need to contact the relevant source.

    Telecoms Provider

    If you wish to limit the ways in which your directory details are listed, you must contact your telecoms provider and specify your preferences. Generally, telecoms providers will give you 2 options.

    Ex-directory - No call

    Your details will not be available in a printed telephone book and will not be available via our online directory enquiries service, or through our directory enquiries telephone service on 118 365.

    Directory Enquiries Only

    Your details will only be disclosed through a directory enquiry. This means that that details will not appear in the printed telephone book, or on our online directory enquiries service.

    The Edited Electoral roll

    If you are not already opted out but want to prevent your personal details on the electoral register from being made more widely available, you can make a request at any time to your local electoral registration officer for your details to be removed. Your request needs to contain your full name and address and can be in writing, via email or phone. For Northern Ireland contact your area electoral office.

    Consumer data

    If you have any requests, enquiries or complaints regarding the appearance of your consumer record in UKPhonebook contact Simunix to confirm the source.

    Companies house & Land Registry

    Entries in Companies House and the Land Registry are available in the public domain by law.

  • Q. Do you have any voucher codes?

    We do occasionally offer voucher codes, these are published on our Facebook and Twitter pages.

  • Q. My card has been declined even though I have sufficient funds?

    Cards are usually declined because the details are entered incorrectly or the transaction has been referred. It is not uncommon for a card to be referred and could be because of frequent or unusual card use in the last 24 hours, or a random security check. If you have entered your card details correctly and your card has been declined try contacting your card issuer to ask them to clear the referral or advise you what the problem is. Alternatively try using another card or PayPal. If you are still having problems please contact us.

  • Q. Can I get a refund on unused search credits?

    Purchased search credits are non-refundable.

  • Q. Who are Simunix?

    We were the first non-telecom company to license the UK's national directory database and in 1999 became one of the first to set up a free online directory enquiries service - Besides directory enquiries we also provide marketing data and data cleansing services, visit our website at for more information.

  • Q. What is T2A?

    T2A offers a wide range of data capture and cleansing capabilities for your website or application via an API (Application Programming Interface). Whether you need to find people, telephone numbers or capture and verify UK postal addresses - it is there to help.

    Visit the T2A website for more information.