Moore place was eventually sold, a restaurant called Esteem Bar and Restaurant opened on the location, only to be closed. Since summer 2015 it's a care home bearing the same name.
Gordon's shirt comes off at 8:21
Gordon's shirt comes off at 35:16.
Moore Place was originally chosen as the restaurant to be featured in the show's pilot episode, as of the four selected for inclusion in the show's first season, it was the one closest to London. However, the restaurant was closed for maintenance work (likely when it got its infamous claret paint job) during the scheduled filming dates. The pilot was therefore switched to being filmed at Bonaparte's, as of the remaining three it was the one nearest to a major city, namely Leeds.