There seems to be a bit of confusion over scale. Their website says 1:1200 for Warspite and Lion, 1:1250 for the T23 and the scale of the rest is a secret.

I have their kits of Lion, Warrior and Chatham and I'd echo Tim's comments about the excellent quality and detail on these castings. With the of care and attention one can lavish on an individual model, it wouldn't be hard for most people to achieve better results than Neptun, given the number of their models I have with moulding marks and prominent flash spoiling the effect.