With the modelling finished I painted Captain UK in a light grey. This acts as an undercoat, but also evens everything out and makes it easier to see which bits need additional trimming or filling.
A few areas still needed slicing and shaving, and there were one or two things needed filling. The biggest of these was a seam along the inside and outside of each leg. I used white wood-glue. which had just started to dry, to fill this as it paints into the narrow space far more easily than milliput would have done.
And here she is with some initial painting.
The white will need a couple more coats, obviously.