The progress he has made in the 11 years since has been nothing short of astonishing.
While a fellow viewer said: "More dead horses in the name of sport, I f****g hate the Grand National".
"I was going out on the saddle he used to wear on Morley Street", Frost grinned.
Jockey Davy Russell after winning the Grand National.
Tiger Roll, who held on to win the race from Pleasant Company in a photo finish for trainer Gordon Elliott, has returned home safely.
"He's an unbelievable horse".
"If I'd finished second, I'd be a long ways out of the racecourse by this stage, disappointed with myself", he said. He'd better keep him now! I'm in a very lucky position and I've got a lot of good horses and good owners.
"The only time I enjoyed cleaning up the grass when dad cut it was around this time of the year, because I could build my own national fences out of the grass", a jubilant Russell told ITV afterwards.
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Russell, though, is a sentimental soul as well - his post-race celebration of stretching out his arms, and his hands shaking is, he says taken from a film about rodeo riders called "8 Seconds" which is the way one of the protagonists bids farewell to a rival who dies.
Her father Jimmy, who won the National in 1989 and is based in Devon, summed it up by saying: 'There is no time to stop and think'. "The man is tough as nails, so this one's for Pat", said the 38-year-old.
The Willie Mullins trained and Malcolm Denmark owned Pleasant Company was 9th in the 2017 Aintree Grand National when ridden by Ruby Walsh.
O'Leary was keen to pay tribute to his trainer after providing him with a second success.
Mullins, who struck in the National with Hedgehunter in 2005, said: "That's twice Gordon has done that to me, he did it in the Irish National too!"
At Plumpton, Frost finished third on the Richard Rowe-trained Remember Forever, in a race that paid £3,314 to the victor - considerably less than the Grand National's £500,000 first prize.
But with every year, people criticise the race for being inhumane because invariably, some horses fall and have to be euthanised.
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