Austin Metro MK1 - car wont start after stood for long time

Hello

After the car has been parked up for a long time tried to start it with good battery and wont start! just turns and turns and turns no chance of fire (full throttle and choke, though it was a good starter last time had it running)

Matty with shop at end of road says that after a while the alcohol and the petrol split in the tank and this is causing the problem why cars parked up for a while wont start

Any surgestions on getting it fired up for the firs time please (please no more "easy star" surgetions please)

Thanks