I have emailed LDMC this morning with my concerns and questions and would suggest others to do the same if they have any. It is late to make such a change and I already have a large financial commitment to the event, accommodation/ trackday etc. if i withdraw. Change to sprint format - no timing / no practice / build up to timed runs, British Sprint Championship - Are they planning on running a session for them or will they have practice as normal, Potential for accidents / Sprinting is not racing, increased danger and who covering costs, Objective is to have more runs - how many planned , Impact of warm tyres and fuel, The detail - Group selection, change tyres before /after, red / yellow flags, exit / entry on to circuit.