http://www.britishmilitarysurplus.co.uk/shop/shirts/olive-green-general-service-shirt-1123297.html
http://www.britishmilitarysurplus.co.uk/shop/trousers/lightweights-fatigue-trousers-1122242.html
Set of British green lightweights: Grade 2 would be £9
http://www.sofmilitary.co.uk/1937-mk3-basic-web-set-product,11318
Basic Webbing £34
http://www.amazon.co.uk/gp/product/B00168YSKI/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=AIKN7SVBFHMAA
helmet £8.50
That would be a basic Jungle green loadout. Use some scraps of green fabric for puttees. Would look better if the shirt and trousers were about 15 sizes too big