You don’t really need to go for boots based on the type of walking you have in mind. Good quality low cut walking shoes would be fine. Check out the Alt-Berg website. They have good quality shoes for lowland walking, both in fabric and leather. Alternatively, just check out the likes of Meindal or Scarpa for shoes. At least with these two brands you can try before you buy, whereas with Alt-Berg that’s not really a consideration unless you’re near Richmond in North Yorkshire.
I prefer leather boots or shoes without a waterproof lining, but they’re getting harder to find nowadays.