Any Event fire and Rescue can not recommend the following companies but they may serve as usefull points of contact and reference for you.
www.event-management-uk.co.uk - Total on-line event mangement solutions.
www.eventfireandrescue.com - Off road fire intervention and prevention service. 
www.esplanning.co.uk -event safety planning for a comprehensive and commonsense approach to Health and safety and emergency planning.
www.rapidfirecover.co.uk - Event fire and rescue cover.
Events attended and supported in 2007/2008.
Great Get Together 2007, Laughton Show. Ringmer Show, South West Show Jumping, Detling Show ground - Kent. Emberton Flying Association-Buckinghamshire. Great Get Together 2008. Big Love festival 2008, Blissfields festival. Thamesmede Trust 08.