http://www.bladderandbowelfoundation.or ... t-card.asp
Toilet Card
Our 'Just Can't Wait' toilet card uses what is considered to be a universally acknowledged image for a toilet. This generic image should help limit any embarrassment and ensure there is no confusion about the purpose of the card. It may also go some way to helping holders of the card find and access toilets in situations where English may not be the first spoken language.
Finding a toilet when out and about continues to be a priority for many people affected by a bladder or bowel problem, and unfortunately remains one of the reasons why so many cut down on social activities or even stop going out altogether.
B&BF's toilet card clearly states that the holder has a medical condition and needs to use a toilet quickly. Although it does not guarantee you access to a toilet, most places you visit will be willing to help you.
The card is a small, credit sized card, designed to fit easily into your purse, wallet or pocket. You can show the card when you're out shopping and socialising and it may help you gain access to a toilet.
*My note -it does cost £5