You have two problems here, both related. Film consists of a impermeable backing material coated with a thin layer of permeable material (often called the emulsion) which contains light sensitive chemicals. Film is designed to get wet - as in developing solution. However a bit wet is a big problem as the permeable layer will swell slightly. If part is wet and part is dry then the emulsion will distort at the interface. As it dries out there will be even bigger problems with the emulsion sticking together as the film is wound fairly tight in the camera. This is why Boots won't touch it. Photoprocessors use automatic machines which can't cope with this problem. Your only solution is to have the film processed by hand, either by an amateur (try the local camera club) or pay a specialist print processor (expect this to cost maybe �20 or more). Chances are parts of the film will be irrepairably damage but some may be salvageable.