I guess that will depend on when the photographer died.
Here is the Legal guide from the Governments Intellectual property Office:https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/481194/c-notice-201401.pdf
This is basically what we should be taking note of:
How long does copyright in images or
Generally speaking, in the UK copyright in images lasts
for the life of the creator plus 70 years from the end of
the calendar year of their death although the length of
the copyright period will depend on when the image
was created. That means that images less than 70 years
old are still in copyright, and older ones may well be,
depending on when the creator died.
For old images or photos, you may never be entirely sure
if something is in copyright, but knowing the age of the
photo will be a good guide to make an educated guess
whether the photo is likely to be protected by copyright.
There may be material in the image which helps to date
it. For instance, a photo of a particular brand of motorcar
may be evidence that the photograph was taken after the
first year of manufacture.
It is important to be aware that copyright duration can
be very complex for certain older works (including some
photographs) that were unpublished on 1 August 1989
and where the author has died. Prior to the adoption of
the Copyright, Designs and Patents Act 1988, certain
unpublished works were granted perpetual copyright
up until the point they were first published. In order to
remove this perpetual copyright, the 1988 Act reduced
the term of protection for such works to 50 years from
the implementation of the Act. This means that many
works which were not published prior to 1 August 1989,
and where the creator died before 1 January 1969, are
due to remain in copyright until 31 December 2039 at
the earliest. This will be the case for many photographs
created between 1 June 1957 and 1 August 1989. "