Word of advice....Don't bother.....Union's are as much good as a chocolate teapot....I was accused of theft in a previous job and my union were worse the hopeless as they actually impeded me in my own efforts to clear my name by giving me duff advice....so if i was you i'd save your �8 a month dues and use them on something you need.....if your still going to go ahead then i think that Unison would probably be your best bet....give this link a try http://www.unison.org.uk/