Iveco Daily 2.3 hpi keeps cutting out?

Hi, have an Iveco Daily 35s12 2.3 hpi 05 reg, the problem I am having is it keeps cutting out and the red injector light flashes, it previously cut out on hills on the same spot everytime but now does it anywhere on flat drives half a mile when cold then cuts out, but after that it cuts out every 30 yards, I've seen a few people on here with similiar problems and wondering if anyone can help me and give me some ideas what it could be, also looking for someone who could tow it to Iveco I live in Harrogate, Cheers