By the time next summer comes around I would imagine it will be 'all change' with the airline operating for Newmarket, as every year they seem to end up using someone else (as often some of these smaller charter airlines tend to sink after a season or two).
Newmarket is a reputable company and fully bonded with ABTA/ATOL so you're quite safe there. They've been around a fair time as well and don't tend to sell bargain £99 breaks to the sun which the dodgy 'fly-by-night' operators that tend to go down the pan seem to sell.
Safe bet I'd say... And a good chance it will be flying with an alternative carrier by the time those tickets land on your door mat.
Support Manston! As you say a really pleasant experience compared to the bigger airports around London.
