RIP. He's been battling serious health issues in recent times.
On a personal note, I once met Uriah Rennie referring a charity game I played in at Sheffield FC.
In all honesty I can't say it was a pleasure, but saddened to hear he's passed at what is a relatively young age.
Despite how he came across that day, he's certainly someone who broke the mould for a lot of young referees (and across football in general)