Irodo seems to have taken over from Antex for Gas soldering irons from what I gather, I have an Antex Gascat 70 soldering Iron and the replacement bits from Irodo all fit it, also the new Irodo soldering Irons all look 100% the same as the Antex ones that used to be on sale which no longer seem to be sold/manufactured, the only difference is that they are blue and the Antex ones were yellow....
I only use Antex Electric soldering Irons, they are the best ones I have used and I like them, have been using for years now, and I have an Antex gas one, the Irodo Gas soldering Irons are good, they have them on special offer in Maplins every year around this time, I get a maplin special offer booklet in the post a few times a year and I'm sure that the gas soldering irons are on offer at the moment...
for heatshrink I use a small gas torch instead of the heat attachment on a soldering iron as it has a bigger flame, I have one with Flame master printed on the side of it, I bought it in Maplins years ago and it fills up with the yellow tins of lighter gas....
at full price the soldering iron kit is about £40 and on offer its about £15.....handy to have one in the toolbox for when you want to tin something or solder a tag connection or the likes....