Thanks for all the advice, which was well digested and after a long search and a period working abroad I'm pleased to say I finally managed to find an R55 Cooper D Clubman with a spec that I wanted in good condition and a sensible mileage, I collected it yesterday. It's in Pepper White with a black roof and mirrors, it was built in early 2010 and the one owner who had it from new before me ticked a good few boxes on the options list, as well as the Chili pack it has the Visibility pack with heated screen, mirrors, auto lights and wipers, Bluetooth and USB, MFSW, darkened rear glass and leather lounge interior with cream piping and seat heating. As it's a pre LCI car it has the PSA engine that I am familiar with from my original R56, it has only covered 45k miles so everything still feels tight and it drives really well.
I'm planning a few mods already, I think it would look better with black bonnet stripes (the classic 'Cooper' style), I will do the 'channel swap' mod and fit A pillar trims with tweeters as it only has the basic Boost audio system. I'm sure I'll be asking a few questions on here in time and am glad to be back in the MINI fold again!