Hamilton’s first Ferrari win in Barcelona closed the gap to 41 points behind Mercedes’ championship leader Kimi Antonelli.
The American is taking his first shot at trying to join the elite six-man club which Rory McIlroy was admitted to last year after winning the Masters.
Moody, who was diagnosed with MND last September, completed his seven-day ride at Twickenham on Saturday.
Kemp’s 39 not out off 16 deliveries and Gibson’s unbeaten 30 off 11 lifted England to a total that was beyond Scotland’s reach.
Aidan O’Brien’s classy stayer won the Queen Alexandra Stakes by a neck.