I should just clarify that the figures I used for SOU were the alternate performance from 20 which is in fact half a tonne worse than the standard perf.
So at 10 degrees you can lift 34.5 tonnes. Minus the zero fuel weight of 30.4 tonnes for a full load of pax and you get 4 tonnes of fuel. 02 is a couple of hundred kilos better still.
Now for JER 27, as its the closest in length to SOU, using the same numbers gives you a MTOM of 38.3 tonnes so nearly 4 tonnes better than SOU and over 3 tonnes better than the Flybe limited MTOM. Structural limit is 37.5 tonnes!
For interest GCI 09 is 33.2 and 27 is 35.3. That's enough for a LGW with a full pax load.
I can get the figures for the other airfields you mention but it'll take a day or 2.