We went down the sponsorship route at a school I worked in previously. A parent with a business paid for the kits, which inevitably had his company's logo on the front. We were lucky in that he offered to do it for us. Maybe making enquiries among parents would be a starter. Or just touting around local businesses. A plea in the local paper? Maybe look at this company, who claim to find sponsors for teams, although I can't vouch for them personally: http://www.sponsorfootball.co.uk/ If you're collecting the Sainsburys vouchers, I think they have football kits available to purchase with the vouchers (probably a lot, I'd imagine).