I've got an old Stormlite shoe box in front of me now and the only info on it is
www.stormlite.co.uk and the shoe type, nothing else.
The shoes weren't bad and the wicking undercrackers I bought with them are excellentnt, I'd order more if I could.
I've only seen Stormlite for sale by F&T and other Sports Direct companies and is probably connected to them in some way,
In the early days, before their troubles, F&T sold their own (excellent) brand of clothing.
The Stormlite brand is on many different types of kit, from cloths to footware to rucksacks, which leads me to believe they are a trading company who commission their goods, made to their own design and specifications, from other manufacturers.
I hope my ramblings help.
Happy trails...torc.