Well I rang the council planning dept and they sent out an inspector, who said because it is not a load bearing wall that it wasn't unsafe, but that it was a poor job - same as you guys have said. Then rang the dad, who came out and said that it was fine, a good job, nothing wrong with it... but I asked for him to get his son to make the door lining true, not 7mm out, and to point the lintel and bocks so they are secure,and to cut the foam. Also will ask him to put some render/sand and cement over the wall so that the plasterer can just skim over it. We bought the door lining and he used a lintel we had, putting the lintel he brought in the cupboard (?)
This firm is popular in the village I live - they often have advert boards in windows - feel pretty let down by them so far. I know they have a chance now to put it right for us, but I am pretty sure I will just end up paying when I am still not happy simply to get rid of them. I should have done the job myself, but the whole point was getting a professional in to do a professional job...