Here's a  source:

April 11, 2016 Poll for a television station.

52% don't think homosexuality should be legal in Britain and 23% think Sharia Law should be applied.  Sharia law calls for the death penalty.  Only ISIS wants them thrown off buildings.  Saudi Arabia and the other countries who practice Sharia law use beheadings instead.

https://www.theguardian.com/uk-news/2016/apr/11/british-muslims-strong-sense-of-belonging-poll-homosexuality-sharia-law