Loads of replies! Thanks all 😊
I have bought and rejected the geox ones after DH said I looked like a security guard 
Sorel are great but too narrow for me on the whole
I have the air and grace starlight boots which are comfy and great for work, but too heavy and inflexible for what I’m after now
I don’t want hiker style boots, so that rules out a lot of the links, sorry 😞
Also don’t want anything with a rigid sole, have bought and sent back countless M&S boots so they’re out.
Gudrun sjoden ones are ok, I don’t love them- are they springy?
Didn’t know DM made lightweight boots, might have to see if I can try a pair on somewhere… thanks for that tip!
Gabor I hadn’t considered, and Googling found these which I quite like, although wish the sole was black.
Fitflop have ruined all other shoes for me, and it is the demise of a pair which has led me on this quest. They are light, comfy and now falling apart after years of wear. The only lace up boot they have this year is hiker style which I don’t like- a pair of black polar sneakers would be 100% perfect, but can’t find any of them anywhere…
Thanks again for all the links 