1200GS servicing near SW19

Hi Tossers,
I need to get a health check done, and in particular the constant red general warning light checked out on my '06 model.
Does anyone know of a decent, cost effective service centre / garage in or around Wimbledon and SW London, with the diagnostics machine? I don't want to pay the hefty BMW labour rates that are charged at the dealer.
Thanks for the help, in advance.
Moho

You need ...

... Steptoe, who is conveniently located in Kingston

Cheers mate,
Will give him a call this afternoon.
That's exactly what I was looking for...