>don't know about british supplied storm shadow
https://www.zerohedge.com/geopolitical/stocks-slump-ukraine-fires-uk-storm-shadow-missiles-russia
>storm shadow
The missile relies on classified American-owned cartographic data, using Terrain Contour Matching or TERCOM, to guide the missile to the target. This gives the American government veto of any sales to foreign countries under ITAR
https://en.wikipedia.org/wiki/Storm_Shadow
rumors are they have about 50 or less ATACMS
while storm shadows appear to be aircraft launched, ATACMS can be launched using himars vehicles they already have, if I understood correctly
no idea, but probably not too hard to hide them essentially anywhere in a large country, I'd guess