Also on the lookout for pram friendly walks until I can use a carrier! The Greenway is a good one - can park at Purwell Lane or Manor Wood (can walk the long way to the Fox which is a nice stop off!)
Stanborough lakes in Hatfield/Welwyn is a really good one. Lots of paved paths and a cafe xx
Purwell springs, Norton common, radwell meadows (if you stick to the path), there are couple of bridle ways/footpaths near Weston where as long as it isn’t muddy they’re pretty flat 😊