@Accy cyclist
V.good boots to be had in the £120-150 range. I rarely pay more than that. £200 is total overkill.
Re lightweight 'fabric' boots. Every time for me. As I said they are considerably lighter than leather and on a long hike that can make a world of difference. 'Fabric' is extremely tough and takes a real beating but do look for a decent rubber rand around the toe unit, one that climbs up onto the top of the boot is perfect,this will give added bash protection to your toes.
Re sole units/grip. Look for Contagrip/Vibram (they have a big logo embedded in the sole). Unless you are planning on climbing on slippery rock the sole hardness will not really matter. Harder will wear longer. All the respected manufacturer sole units will self clean of mud to a reasonable extent. If you are planning on walking anywhere hilly-ish look for a sharply defined (often forward facing) heel breast - this is the bit at the front of the heel. Many a slip has been stopped by this simple feature.
Fit. Whip out the insole. Stand on it (do it for both feet as one will be bigger than the other for sure) with the heel in its natural position (there'll be a small recess to locate your foot properly). The insole should project beyond the end of your big toe by about one middle finger width (ish). Try boots on with warm feet - it's a good idea to go for a bit of a walk beforehand.
Gore-tex lining - a must have. Long wet grass will soak boots without this. Don't be afraid to buy boots that use other membranes - Gore is not the be all and end all.
Have a rummage through these websites for ideas on which brands - look for 3 season boots.
https://www.nevisport.com/
https://www.cotswoldoutdoor.com/
https://www.blacks.co.uk/
Good luck