“Enhanced” catering on new LHR Band 4 routes. No hot food, no ice [Mini Greek TR]
I would imagine that this is because they do not have a contract with a catering company in JMK or JTR to cater the inbound flight and therefore they have to cater for the inbound service from LHR meaning there isn't enough room for hot meals in either direction. Pretty poor considering the fares they are charging IMHO.