Thanks guys for all the feedback and encouraging comments. I think I'm sort of nearly finished:
I have completed a full platoon of RAR, 20 SAS, 7 sticks of RLI, 1 stick of RR trackers, 10 PATU, 4 farmers, 6 Intaf & 13 dismounted Selous Scouts along with a load of vehicles that have mounted crew. A fair amount of MPVs and some armoured cars. Could do with a couple of Land Rovers and a Bedford RL, but that's about it. I've done nearly all the aircraft; 2 x Hunter, 2 x Lynx (wheels up & down), a Canberra, an Islander, a Dakota (with 8 Paras in chutes), a Vampire, 2 x Bell 205, 4 x Aloutte III, there is a half done Puma in a box to go with the SAS for Op Uric, so I'll get to that along with a Mi24 to go with the Executive Outcomes little blokes, but even at 1/72 they do take up a lot of room. Could always do with more ZANLA...
Following on from my attempt at a 2' x 2' terrain board I have started collecting bits for a 2' x 4', which will hopefully spawn into 3 x 4' x 2' eventually.