Some VC winners for you Soren:
Greenwich(as that's a search page and might not work the umbrella site's here:
Maritime Art Greenwich)
There's some corkers on there and the main
NMM website but be prepared to wade through loads of near identical seascapes
, specific section on uniforms is rather thin on ww2 though).
This has got lots of good stuff too ,very good on insignia :
NAVAL-HISTORY.NET
The links are well worth a shufti too, riddled with pics of blokes of all ranks & in all situations.
Cheers,
Adam.