The Home Office provides textphone facilities in all of its contact centres. The numbers are:
Central Home Office: Textphone 020 7035 4742.
Border Immigration Agency: Textphone 0800 389 8289.
Identity and Passport Service: Textphone 0870 240 8090. Typetalk is also available through the 24-hour Passport Adviceline 0870 521 0410
Criminal Records Bureau: Textphone 0870 909 0811.