Certainly Roger raced a Lotus Elite with the HSCC many moons ago, occasionally co-driven by George Hadfield (Simon's late father). I recall lining up alongside him on the back row of the grid at Donington in 1992 for my first ever race (in which I drove my TVR Grantura MkIIA) and finishing right behind him at the flag - after perhaps the wettest race I have ever participated in.
He was a lovely chap; a true enthusiast, always with a smile on his face and with his equally charming wife Penny always in attendance.
I vaguely recall him making reference to having done the odd rally, but as the posters above imply, I think these were very much of the Club/ navigational kind rather than 1000 Lakes, Monte Carlo, Safari etc....
At the time he was restoring a Cooper Bobtail which I think he might have had a couple of outings with, although I assume this is a different Cooper to the 1959 car referred to above.