glowworm swiftflow 80 (honeywell valve)?

First question is why do you need a pilot tube & injector?
Take the Gas Council number off your boiler(something like 44-317-87)and go to any parts centre.They should be able to order it for you.
I suggest you leave this to a registered installer with the right test equipment.
The other thing I'd say is Parts Centre will now only sell such parts to people who produce a valid CORGI card.
Good Luck

George Anderson
January 2008