The actor's stepfather, television director Roy Battersby, died at the age of 87 last week.
Barbie, Oppenheimer and The Holdovers are all in the running this year.
Former Riverdale actor Charles Melton has received a wave of praise for his performance in the drama May December.
"His warmth, charm and mischievous wit will make it a must-watch show..."
“I’d prefer to support people who dress for people like me – the very average woman – all the time,” the Derry Girls star said.
“We did this together, kiddo,” the I Am Ruth star said, as she picked up the award for Best Actress.