The No7 bayonet is RSAF Poole (P)1948. This was one of the last made. The rarer version has a black hand grip. The going rate for one of these is over £100 now. I had a mint one of these donated to my collection by a local builder who was clearing out a flat!
Whilst rummaging at Chelmford Militaria Fair a few years ago. I found a Britishicon entrenching tool, dated 1943 and still wrapped in the original storage paper. £28.00!
These items are getting hard to find in nice condition so you have to grab them when you can. (Funds permitting of course).