I think Terry is right about the four hoses,and apparently this is what has happened,as Serek did mention something about a vacuum leak because of one of the pipe ends not being very tight...possibly slightly split......I wasn't paying much attention,as usual
but he did say they would have to be secondhand,that much I do remember. The car is running fine for the time being and can wait a week or two as its got to go back in for the crankshaft seal,and I may have found the bits needed by then....or not!!
Thanks to everyone for the advice,and this goes to show how the new spares situation is getting a bit grim, and relying on secondhand parts is going to get harder as the prices are getting silly.