Help If Possible

The coursing crew are doing a winter show and racing events on the 18th Nov in Breaston Derbyshire, all monies going to the East midlands Dog Rescue, what they need is a portaloo reasonably priced just for the day, does anyone know any companies that way that could help i am posting it here as maybe some of you non-ped racers would hopefully know of someone or a company that maybe able to help, thank you in advance