Reynolds, who lived out his last years in Croydon, south London, had been in poor health in the last few months.
His son Nick Reynolds confirmed that he passed away in his sleep.
More top news
London singer-songwriter Dua Lipa and Croydon grime artist Stormzy led the charge at the Brit Awards, winning two prizes each.
The awards followed the lead set at the Grammys to show support for the Time's Up movement with artists wearing white roses.
The husband of a British citizen jailed in Iran has delivered letters of support for his wife to the Iranian embassy.