Nick wrote:
Hang on.
St. Thomas' is spelt that way because it is dedicated to TWO St.
Thomas's. Thomas is plural so it's St. Thomas' - see?

Nice try, Nick, but the church that gave its name to the hospital was
renamed in the Reformation and lost its designation to Thomas Beckett *in
exchange for* St Thomas the Apostle. (In any case the plural of St Thomas
would be St Thomases, so it would have been St Thomases' Hospital.) Pity
that the current NHS Trust management seems to be illiterate.
--
Richard J.
(to e-mail me, swap uk and yon in address)