While working on the roads the post-its I was using to identify where the components should go fell off so there was no alternative but to lay out the terrain yet again on the patio and use the opportunity to check how well everything fits together.
The Axis end
The Allied end
and the overhead view, useful for recording the exact fit
All the roads and tracks are now numbered and I've drawn up a plan to speed up laying out the terrain at the big game.