Replacing the hub ball joint neareast to London?

I see Aaron auto does it in Derbyshire but thats a 2 hour drive? Not end of the world but anyone know if it can be done while I wait? (or same day?)
But if anyone knows closer to London that would be great?

Thank you
 
Would recommend twotechs as well.

Unsure whether they have experience on doing then in the rs fold though.
 
Will give them a go thanks.
Anyone know if Rs wimbeldon do them or do they just sell the ball bearings? Not had a chance to phone them yet.