If you're on a budget and don't have any cutting tools at all the I suggest the following
1 Mora Clipper, you can pick these up for around a tenner and are a good starting knife for all your bushcrafting
2 Frost spoon knife, again it's a basic tool and will do the job. Again you can pick these up for around a tenner or a bit more. DON'T get the double edged version until you're confident using a spoon knife.
As you're in Enfield you can pop along to Crews Hill and go visit The
Bushcraft Store there for the clipper.
Once you've started down the road to spoon carving addiction you can look at the more expensive knifes from various makers on here such as FGYT, JoJo and Dave Budd.