A dead-set classic, and a song that could reasonably be blamed for killing off britrock in the 90s and ushering in a new age of pop dominance.
Robbie's solo career had been on the ropes up to this point. After leaving Take That he had released a few middling singles and was more known for putting on weight and making a drunken arse of himself in public as a wannabe Gallagher brother. But 'Angels' came out absolutely exploded. He then became Britain's (and most of the rest of the world) undisputed King of Pop for a good decade.
That braindead whore Jessica Simpson did a cover of it. That was pretty much around the last time anybody heard from her.
It's also funny that some busker in Ireland claimed he co-wrote the song with Robbie during a drunken jam session in a pub and tried to sue him for credit and royalties. I don't think he was successful as the song still only carries Williams and Guy Chambers as writers.