2013 Adam 1.2i - recently purchased. Engine still hot after when car parked fir at least an hour after driving. Is this a major issue & should I contact dealership?

If you are only using it for short journeys the engine / radiator coolant fan may not be reaching the temperature where it is activated and cools the engine . This is normal on most cars . Keep an eye on temp gauge or temp warning light ( whatever is fitted on that car ) and coolant level but think you should be o.k