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 FileMaker Pro Custom Functions

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UKPhoneMask ( Number )

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  Average rating: 4.9  (27 votes)
  Discuss this Custom Function

Philip McGeehan, Structural Metal Decks Ltd

correctly format any UK telephone number

Sample Input:
UKPhoneMask ( 01234567890 )

UKPhoneMask ( 01134960018 )

UKPhoneMask ( 02079460018 )
Sample Output:
01234 56789

0113 496 0018

020 7946 0018

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


One space between the area code and the local number, to help distinguish the two parts clearly.
Where the local number after the code is more than six digits long, split it with a space for readability: xxx xxxx or xxxx xxxx.
There are also, exceptionally, two eight digit numbers in use which are not specifically included: 0800 1111 and 0845 4647.

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


You are a legend

That is all

Matt, Bournemouth
February 10, 2017 2:03am

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