technically you just did, any blade which locks without good reason is an offence under the act.
When I'm in public woodland for the day I will take a SAK or modified opinel no6. I know the opinel technically is a lock knife but they are very 'people-friendly' knives and perfect for a stroll through the woods.
I never have any worries about the knife laws because I don't break the knife laws.
There's my good reason for having it - a stroll through the woods.
Picture it: I have just stumbled out of the woods and am walking the 200 yards back to my car. A copper sees me - red faced and splattered to the knees in mud. I have a OG pack with a '58 water bottle in each mesh pocket. Inside the pack is the remains of my lunch, a few half finished spoons, a couple of pringles tins with recently gathered cramp balls and tinder inside them and a few odds and sods like paracord, matches and a small folding opinel.
It's obvious where I've been and it's obvious that the knife I have on me has been used. If it's been used then I must've had a good reason for having it on me.
For a mooch around in the woods I wouldn't take a fixed blade as it isn't warranted but I don't think any copper would question that I didn't have a legitimate reason for carrying a small opinel on me.