I hadn't really thought about it!

It's a good point. I guess you could find out what your local council's policy is? I'm sure they must have a website. In my county they're
supposed to be committed to "going green."
One of my friends (who is a little more hygeine-conscious and organised than me) always carries a small packet of soap leaves and hand towels in her handbag. I have a small trial bar of soap in a plastic travel case (somebody got it free with a gift set...) which I take to work, and a small bottle of hand sanitizer in my desk. Soaps tend to dry out my skin, and I don't always trust the public conveniences...
You should be aware that some soaps contain animal products: there's a list
here.
Tallow (hard animal fat) is commonly used in soaps. Gelatine (from animal bones, skin and hide), elastin (from meat), squalene (from liver of shark), urea (waste nitrogen), honey (bee food) or propolis (bee glue) may be used in the general production of toiletries and cosmetics.
There's quite a few veggie soaps around though

: Lush and Weleda do them, and there's smaller companies like Green People and Dr Hadwen Trust. These can be expensive, but I found that some supermarket budget lines are vegan, oddly enough! I'm afraid all my information's for the UK though
