If you’re interested in ground crew / task specialist work then Skyhook Helicopters (
https://www.skyhookhelicopters.co.uk) were recently advertising a position.
Similarly you could try contacting PDG Aviation Services (
https://pdgaviationservices.com) as they also utilise task specialists.
Final suggestion would be seeing if Heli Fuel Services (
https://www.helifuelservices.com) had any opportunities.