M22 DKB - Darren Beattie

Hi Guys, I find myself coming for help in the case my Vrs's gearbox has packed up to a certain extent. I was driving on the motorway @70mph, went onto the exit and slowed down to 3rd then it started flashing "3" and went into limp. As I'm having a little panic to myself thinking it's away to give up in the middle of the road it jumped back into gear and drove a little. But it seems the gearbox is very confused, screams to limiter in 1st, then hops to 3rd, then to 5th and vista versa. Diagnostics state gearbox fault. I don't know where or who will fix this, any help in the matter would be greatly appreciated. I know it won't be cheap but does anyone know a garage that can fix? Cheers Darren