1) I AM MAXIMUS (age 9, weight 11st 12lb)
There was a lot going on in the spring of 1974. Abba won Eurovision, Manchester United were relegated and Red Rum became the most recent horse to win the Grand National with the top weight, which was then 12 stone. Just over half a century later, last year’s winner will attempt to emulate the greatest Aintree hero of them all and defy top weight, and though he is higher in the ratings, he won so readily 12 months ago that he would surely have done so with another 8lb on his back. Lacklustre in two runs this campaign but Willie Mullins will have been working backwards from here and he seems highly likely to leave that form behind now he is back at the scene of his greatest triumph.