"It's the best feeling I've ever had", Fox told the BBC.
"The tack slipped round his belly and there was nothing else I could do from there", said Cook, who during the incident had done well to remain on the horse.
Whilst the races at Aintree signal what is to be considered the most important weekend for bookmakers in the year, it seems the odds were not with the bookies in 2017 for the Randox Health Grand National.
Fox, who broke his wrist and dislocated his collarbone just a month ago, has been on receiving end of much praise online following his charge to victory on the 14-1 horse. I felt we'd done everything we possibly could to get this horse here.
Belinda McClung, who's from Ancrum near Jedburgh, bought the racehorse with her schoolfriend Deborah Thompson to keep busy while their husbands play golf. "Without them I wouldn't have got back in time and I wouldn't have been as fit as I am".
The 24-year-old was riding in the world's most famous race for the first time at Aintree on Saturday but revealed he had only watched it back once.
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At least 17 people were treated for injuries, said Ramon Muchacho, a Caracas-area mayor where the demonstration took place. Leaders in the ruling socialist party have accused the opposition of trying to provoke a bloodbath and its own coup.
Fox himself almost missed the ride, only returning to action after a broken wrist earlier in the week, and the mount on One For Arthur was just his fifth since his return. I asked the doctor if I'd be able to ride in the National - he smiled at me and said 'well at least it's a race that you're unlikely to fall off in!'
Russell has already tasted Cheltenham Festival glory with Brindisi Breeze and now joints an elite list of female National-winning trainers along with Jenny Pitman (twice), Venetia Williams and Sue Smith. I said it's for Scotland, but it's really for the team and the yard. Saint Are (25-1) was third, a further 3 3/4 lengths back.
"The problem is we won't get the money back because with the Grand National most people only make that one bet a year". It's been an absolutely incredible day. Not everyone can be champion jockey but this race just gives a standard jockey like me a chance to shine on the big stage.
McClung added: "I thought this morning, it's baking hot so there's no pressure now, he's not going to win on that ground but I have to say he's just shown his class today". We seemed to get round so quick and then when we jumped the water we were rolling.
"He's fantastic and he got a great ride".