Cheers all for the suggestions.
When I said that 3 1/4 was legal enough I guess I was just trying to get some suggestions outside of the narrow category. For example, the U2 or TK4 look just like what I am looking for, so I may get one for the pocket when out on the hills when I have a reason for carrying a knife.
For now though I am looking at something like a sodbuster which is non locking. EKA do a legal folder which seems to fit the bill also.
Given that I need a decent EDC I will get a legal single blade first. If I get a less expensive knife first then I can be a bit bolder with it in use!
Again, this forum is full of many very helpful people.:You_Rock_
I understand what you're saying but if you "forget" that you have the knife in your pocket and are stopped, the extra 1/4 will get you into bother.