It has been outside in some quite heavy rain showers, I've recently fitted a radio but did not cut any wires. Tonight I was fitting a new battery, a standard sized battery to replace the old gel battery as recommended by Craig at Murrays, at no point did I get the terminals mixed up.
Went to start the car, lights on dash come up, press the immobiliser fob, hear the fuel pump prime then nothing happens, no click, no attempt to turn over

Bit worried as we are supposed to leave on Thursay, I still have loads to get organised and I'm on call Tuesday and Wednesday nights.
Any advice greatly appreciated.
Thanks