Car cutting out while driving!

[Welshdrg]

helllo today i was driving to college came on to a roundabout and cut out i restarted it and it kept cutting out i got to college parked it up ater vutting out while parking ....went to come home it started then cut out soo i put the accelrater in while it was unstarted then it worked ...what causes the problem because it doing it alot latly ??

p.s.

peugeot 306 r reg 1.4