Online payments processor Worldpay is predicting that this year’s Grand National, which takes place at Aintree on Saturday, will be the biggest Grand National ever for online bookmakers.

The Crabbies Grand National The Crabbies Grand National Source: thecrabbiesgrandnational.co.uk

Alan Watson of Worldpay ecommerce said: “The Grand National is always the most popular betting event in the sporting calendar and we are already seeing huge excitement around this year’s race.

“Racing fans were emboldened by a Cheltenham Festival that saw bookies take a bit of a pasting and we anticipate that punters will pile in on Saturday afternoon."

He continued: “We expect this to be the biggest Grand National ever for the online bookies, and the fact champion Jockey AP McCoy is riding the race for the very last time only adds to the drama.”

According to Worldpay, last year’s Grand National saw a 71 per cent increase in online betting activity and a 43 per cent spike in total betting value compared with the week before the event.