My last two pairs have been Alt-Bergs (just off-the-shelf ones). They’re on the heavy side, but you get strength and some durability with that. My first pair failed with cracking along a side-to-side crease over the top, and my second pair look like going the same way, and yes I did regularly treat them with the special wax they supply. I also had a bit of an issue with tightness over the top in the left one (my left foot is larger than my right and prone to oedema following an ancient broken ankle) but I was able to sort that out by loosening the lacing towards the front of the boot. If you do a lot of walking on tarmac and you wear the sole out quickly then they will re-sole the boots for a very reasonable price (£40 IIRC). But, as I say, mine failed in the leather. I guess I got 1500+ miles out of them.
Their factory shop is close to Richmond. You can pitch up, get measured and buy the boots there. You may well find the place has quite a few squaddies in from Catterick Camp. I think the soldiers might be the main customers, which is a good sign I guess.