Maybe, but there are dozens of defense journals saying that there have tons of cargo aircraft landing the past 6 days unloading thousands of missiles. That can't be just from the UK, 1615 missiles wouldn't take that long or so many transport sorties.
You can go with pledged, but that is from one single source in one article, competing against countless sources, I've read at least 2 dozen, that all claim that the USA and a few other Nato allies which possess them have sent 17,000 Javs and 2000 Stingers. Just google it, the story is everywhere and has been for days.
Looking at the numbers of tanks, apcs, and vehicles that Ukraine has destroyed, they must have been given thousands and thousands of anti tank/vehicle missiles, how else would they be giving the Russian army such a working over.