Thanks for the information. I feel the problem is that all three airbases are in the East of England and would therefore be overshadowed by Stansted.
In addition there’s also Norwich (I realise it’s a tiny airport but it’s within reach of Mildenhall) and Cambridge (which hasn’t had been as succcessful as thought). Once you go further to Alconbury then you are that much nearer to Birmingham (using the A14/M6 corridor).
According to the Indonesian media, Merpati ceased flying in February 2014.