Lots of young drivers I'm following are tweeting their condolences, along with several motorsport journalists, the first among which was Henry Hope Frost from Autosport;
"Henry Hope-Frost @henryhopefrost Sad to hear F1 doc Sid Watkins has gone to see his old mate Ayrton. RIP"
Very sad news. He contributed so much to the improvement of safety in F1, he will be sorely missed. I hope there will be a fitting tribute to him at the next grand prix
Very sad news. He contributed so much to the improvement of safety in F1, he will be sorely missed. I hope there will be a fitting tribute to him at the next grand prix