There are two events coming up (full post under events) where authors can go and set up a table. One is only next weekend in Stafford and you may be too late to get a table.
However most authors going are also members of New Writers UK who are a helpful group I joined last year. Good support for SElf pubbed authors as well as having some mainstream ones too.
Next weekend there is a book festival as part of Stafford Arts Festival that some of us are attending so if near by pop in and have a chat: Stafford Arts Festival 17th September
New Writers UK have an annual fair next month and I went last year and would say it is WELL WORTH attending if you are looking for advice on getting published. (Whether mainstream or slef pubbed routes). There are a number of useful talk but just chatting to various authors can be of value in learning how they did it. Nottingham New Writers UK Annual fair
Is the info on that one.