The Dresser (2015) online

In the closing months of World War Two ageing actor 'Sir' and his wife Her Ladyship bring Shakespeare to the provinces with a company depleted by conscription. 'Sir' is plainly unwell, discharging himself from hospital and Her Ladyship believes he should cancel his upcoming performance of 'King Lear'. However Norman, his outspoken, gay dresser disagrees and is determined that the show will go on, cajoling the confused 'Sir' into giving a performance - one which will be his swansong, at the same time drawing a parallel between King Lear and his fool as Norman, despite ultimate disappointment, serves his master.