Royal Bank of Scotland sank 9%, with 7% falls for Persimmon, Taylor Wimpey and Barratt Developments.
Sterling fell 1.7% against the dollar and 1.9% against the euro.
The FTSE 100 index closed little moved, but the FTSE 250, which mainly comprises UK-focused firms, fell 1.6%.
Capita topped the fallers in the FTSE 250, plunging 14%, with Countryside Properties down 9%.
Read MORE
BBC NEWS