This story is one of the times in life when you are glad you made a mistake.

Alex Blackwell was looking to place a £20 bet on One for Arthur in the Grand National on Saturday.

Unknown to Blackwell, he mistakenly added another zero to his bet in error.

Watching the race, the 38-year-old was hoping his horse would cross the line first.

The Daily Mirror reported that the end result was beyond Blackwell's wildest dreams.

"I checked my ticket when One for Arthur won to see what my winnings would be.

"When I reviewed it, I saw I had put £200 on.

"I felt very lucky as I ended up winning £2,200.

"It was pretty fortunate because I didn't mean to put that much on. It's lucky it came in."

Blackwell is certainly not a heavy gambler, and described the £200 figure as "crazy."

The freelance journalist usually puts a couple of £30-40 bets on the Grand National every year, and occasionally puts a bet on the football.

The 38-year-old from Kibworth Leicestershire, said it was nice feeling to get one back on the bookies.

"I sort of feel the bookies have taken enough money off me over the years.

"This has balanced the scales a bit. I've been lucky now, but I've been fairly unlucky in the past."

Blackwell placed a win and each way bet so he put on £100 for a win and another £50 each way on the horse.

In a clear sign of a good researcher, Blackwell picked One for Arthur after reading the write-up on the competing horses on the morning of the race, and found that the 14/1 shot was in good form.

One for Arthur struggled for the first mile and at one point was 20 lengths behind the leader, but consistently good jumping saw him come into the race.

After taking the lead just before the final jump, the 8-year-old never looked back and won by four-and-a-half lengths from Cause of Causes, with Saint Are in third place.

It was a day of celebration for Scotland as One for Arthur became only the second Scottish trained Grand National winner with the other horse being Rubstic in 1979.