Any ideas would be great thanks guys

Was driving to work this morning turned into the road of my work and car cut out did not lose eletrics radio was still playing only engine cut out.

Tried turning it off on on again and the engine tickes over but does not fire up.

Frind said to me to make sure the fuel cut off switch did not come on WHERE IS THIS LOCATED ?

Yesterday i had a clifford concept 650 alarm installed on it worked fine ive had that alarm before and my friend who installs them i trust 100% could it be something to do with the alarm or does it sound car wise

Any help would be great

Cheers

$I