BBC reports he passed away on Christmas Day but no more information has been given.
Ryall had a five-decade career across film, TV and theatre, beginning his career on the stage before becoming a familiar face on British TV.
On television he appeared in The Singing Detective, Holby City, Casualty, Midsomer Murders, Goodnight Sweetheart, Trollied, Our Girl and the original House Of Cards.
More recently he played Frank, the grandfather who suffers from dementia, in UK comedy Outnumbered and Britain’s oldest man Old Bert, the narrator of BBC’s The Village.
Film roles included Elphias Doge in 2010’s Harry Potter and the Deathly Hallows Part 1, Around the World in 80 Days, Truly Madly Deeply and The Elephant Man.
Sherlock writer Mark Gatiss tweeted that Ryall was “a twinkling, brilliant, wonderful actor I was privileged to call a friend. RIP”.