Maybe you bought in bulk and your little one has moved onto the next stage formula or maybe you had it just in case and didn't need it?
Either way, if you don't want them, I'd gladly take them off your hands. I live in North London and could come and collect if you are near to Enfield, or my mum is in Bristol and could collect if you live there. (I'm not sure whether postage would work out as expensive as buying formula...)
Thanks