It appears from quick searches I have made that BCT Aviation Kemble Ltd is a dormant company. Matthew Litton left the Board on 16 April 2007. It is owned jointly by a Maureen Campbell and a Robert Brown, although both of them resigned as Directors on 21 March 2007. Sole remaining Director is Pawl Shanley.They had a CCJ judgement made against them in Bristol on 4 September 2007 for £2550.
Pawl Shanley registered Trans International Airways Ltd on 9 August 2006, with fellow Director Jane Shanley. This apparently trades from Building 9 at Kemble Airfield.
Interestingly, Robert Brown is also co-owner, but not a Director, of BCT Aviation Maintenance based at Cardiff Airport. This company is active. The other co-owner is a Mr R J Campbell. No idea if he is a relation of Maureen Campbell.
Further, Robert Brown started a new company on 27 April 2007 called Light Aircraft Leasing Ltd, based at his home, which is 116 Boughton Lane, Clowne, Chesterfield, Derbyshire, S43 4QF. Fellow Director is a Desmond White of Bristol.
He also registered a further company on 27 April 2007 called Cardiff Aviation Engineering Ltd. He is Director and Secretary, and a Christopher Dove of Surrey is also a Director.
Although I hold out little hope for the return of your money by writing or trying court action, you may at least be able to get hold of somebody, who may yet have something of their conscience left if you approach them personally. Guilt can be a powerful force.
Good luck !!
Lysander