If by water bottle you mean radiator header tank it reads like the waterpump may have failed and is straining the timing belt but it can't have slipped cogs or you would not haver got home. Also reads as if the alternator belt is slipping, but that might be because the alternator has failed and that explains the rubber burning smell and lack of lights. Halfords branches are open on Sundays, but simply replacing the belt may not solve the problem.