Been informed I may need PLI to attend race circuits as a snapper in 2005 (just in case one of my camera lenses leaps from it's bag and takes out 50 spectators no doubt

 ) 
 Does anyone have any advice as to: 
 a) how I go about getting this 
 b) who I would/could approach (in terms of insurers) 
 c) how much it's likely to rob.....sorry cost me.