“I might be wrong but did Oliver Carter’s decent Hunter Chaser and Whitbread winner Otter Way run in the Midlands National as a 17 year old?”
Yes Astralcharmer, in 1985 according to my old Timeforms. It may not come as a surprise to learn he was pulled up on what was to be his final start.
He also won the Horse and Hound Cup in both 1976 and 1983, which is an unusually large gap.