LARP Exchange provide some beautiful looking leather gear (armor and accessories), plus clothing and LARP safe weaponry. Their armour in particular is worth looking at, with some interestingly designed pieces. The Barrel Bag, whilst fairly common place, is wonderfully designed.
Also this is one of the only places I’ve seen in a while that sell cloth bracers to go under plate (or leather) armour. A small thing, but it made them noteworthy.
One flaw with their website though is the lack of large quality images to view, especially of the weapons, which leaves you you wondering is that the right sword for me?