In a sense, yes. A lot of keepers have a separate area with a tree, or some plants and vines outside of the cage where their cham can wander around. Depending on how long you will allow him in that area you will want lights (both basking and UVB). Do not free-range him in an area with other animals or around things that could hurt him - basically baby-proof the area. I have a cat so the only free-ranging I do is on my screened-in back porch. I have a couple of ficus trees out there and take my boys out for a couple of hours in the afternoon, however I also realize that we have VERY different temperatures here in Southern Florida than you do in the UK. Do a search on here, there are plenty of pics of free-range set-ups so that you can get some ideas on what works best for you.