Have arrived in Malta. For anyone interested yes there is a small duty free on arrival prices are not particularly cheap.
Air Malta use Numbef One lounge at LGW.
Found Air Malta Business class to be very good. Proper meal served on high quality ceramics glass for drinks proper metal cutlery of high standard, white linen table cloth, food excellent tray consisted of cold starter, hot main, cheese dish, dessert, warm breads. Reminiscent of the good old days!