Thanks chaps, as always, it's much appreciated.
Work has started on the port wing, with the landing lamp aperture drilled out, the rear of each nacelle opened, and two cowling panels removed from the port outer engine nacelle, ready to plan and install an engine being worked on by the ground crew.
The folding cowling panels will be made from plastic card, and fitted in the open position much later in the build, and I'm assuming that quite a bit of scratch-building will be required around the open engine bay, and the rear of the nacelles, and I should have a better idea of what's needed once the engine is test-fitted.
I've ordered a set of "Quickboost" resin engines, which should be with me hopefully tomorrow (Wednesday), so I'll check these against the engine bay and see what can be done and how.
My wrists and hands are aching a bit after all the drilling, sawing and filing (the drilling was hard going, through quite thick plastic), so I'm having a break tonight, but should be back with another up-date sometime tomorrow, with the resin engines and the start of work on the starboard wing.
Meanwhile the pics below show how the nacelles were opened and the cowling panels removed (the latter by using a razor saw).