Aircraft Decal Markings, 1/350 scale

Does anyone in the UK have any spare decal markings for 1/350-scale aircraft?
I have plenty of US Navy low-vis markings (grey and black stars-and-bars), but I
need the earlier full-colour versions, together with a variety of Royal Navy and
Royal Airforce roundels (etc.).
I am willing to pay a reasonable price (including postage).

Many thanks,