That's a cracker Andy, very nicely done!
If you're going to enter it in comps at some stage, then a couple of small details as finishing touches will go a long way when you get the chance.
The landing gear indicator pegs (shown as small 'bumps' on the kit wings), still used on the MkV, and the doped fabric patch over the flare chute, as shown in these pics I took especially at Duxford. (the patch shown is on the MkIX, but was in the same place on the MkV.)
Also, this aircraft probably had the earlier IFF, with wires from the tips of the tail planes to the fuselage. Oh, and I can't see a pitot tube?