Gyro CPL
There's no Gyro CPL in the UK because no-one has made a serious request for one. If you have a reason for wanting a CPL(G), and an aircraft on which you can exploit it (ie a gyro with a CofA or a Permit plus exemption for aerial work) then you'd need to work with the CAA on developing a set of requirements.
The CAA are aware that this may be needed at some point in the future.