Decided to start doing this once a month at the beginning of the month, then leave it for the rest of the month, that way the lists don't get spammed with requests for people helping at cons.
In the next few months, the following conventions are needing GMs, I've listed what each is looking for and what each is offering in return in the full description of the con.
Continuum is the weekend of the 12th to 14th of August in Leicester, England, they're looking for all different games from tabletop RPGs to LARP and Freeform, they don't provide complimentary entry, but as noted before, they do provide a drink of whatever you like in return for a game run. Full details at http://continuumconvention.co.uk/
Strategycon is running between the 25th and 28th of August this year in Telford, and is primarily CCG and LCG at the moment, but they are looking to increase the number of other games that they're running. They will provide free entry in return for a single game run, and accommodation in return for five games run over the weekend, full details and submissions forms can be found at http://strategygamecon.com/
Wyntercon is running on the first and second of October this year in Eastbourne, and is still looking to have more games in the lineup, free entrance for running four hours of games, beginner and child friendly is a must as the crowd there isn't pure RPG and reacts better to shorter games that allow them to play the rest of the con. Anyone interested should contact firstname.lastname@example.org to book their games in, Rachael Hodgson is the Games Tzar there and will be happy to advise on suitability of games.
Dragonmeet is the 3rd of December at the Novotel Hammersmith in London, free entry for four hours of games provided, and we're happy to take all different types of games, as well as suggestions for live games and demonstration games. We're bigger this year than we have been in previous years and we're looking to increase the number of games on offer. We're also needing more volunteers for working the floor on the convention. Full details can be found at http://www.dragonmeet.co.uk/
If you need more details on any of these conventions, get in touch and I'll advise where I can.