UK bodyshop for Clamshell Osmosis

Hi guys...
looking for a recommendation for a good UK bodyshop preferably not miles from Hertfordshire for a bodywork repair.... Small amount of blistering to several areas on clamshell and I gather this has to be treated correctly by people with experience.
Thanks for any suggestions from all you nice people...


Mortified GT Asylum
Grind out blisters, clean with acetone, west system epoxy repair area mixed with scilica powder.... thats anyways the soloution on boats. Osmosis smell of vinegear.

Best of luck with any repairs.