Fridge repair

Could anybody please suggest any local recommendations for what I suspect is a relatively small fridge repair job? My fridge is freezing content so I suspect that it’s either thermostat or a gas issue. In any case, I don’t feel equipped to deal with the repair so hoped for recommendations, please and thank you!

I also need a fridge and freezer repairing, any recommendations gratefully received! Suspect thermostat issue also.