The Copyright, Designs and Patents Act 1988, section 15.
"Copyright in the typographical arrangement of a published edition expires at the end of the period of 25 years from the end of the calendar year in which the edition was published."
https://www.legislation.gov.uk/ukpga/1988/48/section/15
My understanding is that this only gives protection to the
typography. It does not give any protection to the words of the text of the work which, if out of copyright, you would be free to transcribe.