I've done the entire passenger networks in Scotland, Northern Ireland and the Republic of Ireland, and the vast majority of England and Wales.
I had cleared all the mainline track a number of years ago in the UK and Republic of Ireland but there are quite a few new bits now that I really ought to catch up with.
The reason for this is spending far too much time abroad where I have done the vast majority of track in Austria, Belgium, Bosnia, Croatia, Estonia, Greece, Latvia, Lithuania, Luxembourg, Portugal, Slovenia and Switzerland as well as large parts of Germany and the Netherlands. Other countries where I have done odd bits are Bulgaria, Czech Republic, Denmark, France, Hungary, Spain and Sweden, and I have barely scratched the surface in Italy, Poland, Serbia, Slovakia and Turkey so still loads to go for
There are a couple of places on your list that I would be interested in visiting but what usually happens is I tend to concentrate on countries I have already started (including haulage) until I run out of things to do / get bored / too many nasty new plastic units turn up! There is also the fact that I like some countries a lot more than others so am more inclined to go back to those places even if there is not much required in the way of track or haulage.Too right, you slothful person ! Call yourself a European continental basher? What about Albania, Belarus, Finland, Macedonia, Moldova, Norway, Romania, Russia and Ukraine? (To say nothing of the countries in the Caucasus, if one counts them with Europe.) I jest: am in awe of what you've achieved !