ref the photo id bollocks ...
first of all - if you aren't already on the electoral roll, Please register for your vote [and go on the private list, the one they don't sell !]
if you don't already have an acceptable ID
best bet is to apply for a postal vote [and tick the until I tell you otherwise option]
second choice would be to apply for one of these ...
Apply for photo ID to vote (Voter Authority Certificate) in some elections and referendums in Great Britain if you do not have an accepted form of ID.
www.gov.uk