GAB Suspension Rebuild

As per title anywhere in the UK that rebuild GABs my fronts are knackered but the rears are good?

Thanks in advance.

Think gaz shocks in essex do lots of differnt shock rebuilds so could be worth a phone call at least ...

There you go mate ...... http://www.gazshocks.com/contact-us

Think you will be hard pushed find someone rebuild standard style sealed strut type GABs.
You can convert them with Bilstein inverted inserts as GABs have 50mm metric tubed bodies, B6 cartridges for 50mm strut bodies with top metal interference fit seal ring can work or you need thread top of struts or chop threaded tops off VW or bmw struts & weld on to give wider option of possible inserts.
Bilstein inserts are rebuildable & can be custom valved .
other option is used set of GABs off bob then work on old ones.

Sorry i didnt realise they are sealed shock   

I may possibly have 2 fronts I could flog you spike if they can't rebuild them. You won't be able to get hold of me next week though as il be in germany

Searched for a while seems the front shocks are a common issue both sets ive had one of the fronts went soft, dont think anyone rebuilds them, shame as they are great shocks

I remember seeing a post on the blistien mod think it was a guy from new zealend that had it done like mr b said ....

Yes it is a shame, standard style strut options for the GTiR are very limited & all used options are pretty old, the Bilstein mod is way go as end product better than original GAB. Main hassle is sorting what insert to use, likes of RX7 inserts will fit the 50mm GAB bodies but need look at rod thread & cut for top hat fitting plus rod length etc.
If I was to do this I would probably opt for crossing the GAB strut with threaded top of a VW strut as increases possible inserts drastically & threaded top seal ring collars are far better.
You can also use Koni inserts same as Whiteline opted to do but Bilstein are far better.