"Need I point out supermarkets do not need to air freight in non perishable goods if they did the overheads would soon put them out of business!!"
As I have already pointed out previously, because the shipping lines are slow steaming and reducing frequencies, and product life cycles on fashion and some electricals are so short, the UK inbound supply chains are increasingly turning to air transport to cover the demand spikes whenever a particular product line goes up in demand. This would potentially fit exactly with the non-food DC's at Teesport. However, it is doubtful whether there would be sufficient volume demand for a dedicated long haul freighter into MME - more likely into EMA then road to the Teesport DC's.