[Drifterman]

Nah, they're spline drive bolts fellas.
A torx drive only has 6 points and will bugger up the bolt head, make sure you use the correct size spline drive and they should come straight out

 

[Drifterman]

Thanks for the info guys. Looks like another trip to the DIY shop for some more tools Any recommendations where I could pick up a set cheapishly? Halfords have 7 Piece Spline Bit Socket set 1/2" for £22.

That sounds about fair, if you can handle the fact that it'll involve entering a Halfrauds branch!