If either of the horses win at 20/1 or 11/1 respectively, Ladbrokes will be shelling out to millions of happy punters. Over £300 million is expected to be bet on the day of the Grand National, the biggest betting day of the year.
David Williams of Ladbrokes said: “Shackalackaboomboom will surely appeal to punters who fancy backing a fancy name.
“There’s always one that excites the punters and with top jockey Barry Geraghty in the saddle, he fits the bill perfectly at 20/1.”
The best backed horse of the week so far has been mud-loving West End Rocker who is now just 11/1 for the National.
“It’ll be a shocker if West End Rocker wins. There’s more rain forecast for Liverpool before the big race and every drop will enhance his chances” added Williams.
Ladbrokes latest betting on the Grand National: 6 Synchronised, 9 Junior, 10 Cappa Bleu, 10 On His Own, 11 West End Rocker, 12 Ballabriggs, 12 Giles Cross, 14 Seabass, 16 Killyglen, 16 Chicago Grey, 16 Sunnyhillboy, 16 Treacle, 20 Becauseicouldntsee, 20 Organised Confusion, 20 Shackalackaboomboom, 25/1 bar