Hi all, just wondering where you get your supplies of washing up liquid? We have recently bulk-ordered Sainsburys Value at 35p a 500ml bottle, but the bursar had decided we can't do that anymore. Buying through the canteen means that the stuff comes concentrated in huge gallon containers that would mean the technician decanting and watering it down...both time-consuming and not very satisfactory. Any suggestions as to where we can get cheap, half decent stuff would be greatly appreciated. Our school is in Northeast London. Thanks in advance.