The telephone number +44 7585 775712 is being used by scammers to send fake census submission links. If you receive a communication from this number then be careful not to click on any links. Just delete and block the number.
The most recently reported census scam text from the number +44 7585 775712 contained the following message:
CENSUS: There is missing information from your census application please visit: www(.)onsgb(.)backtrack(-)submissions(.)com to avoid £1000 fine.
The website above is clearly not the official domain for the Office of National Statistics who actually run the census.