Hi Shaun, welcome to the motorcycling world.
Once you have passed your full test, you are more than welcome to join our group. The first steps for this would be to book your advanced course through IAM Roadsmart (https://www.iamroadsmart.com).
At this stage you would get assigned to a group, WSAM would be the most local for you, once you have passed your advanced test you become a full member of both IAM Roadsmart and WSAM.
There is also the enhanced rider scheme (https://www.gov.uk/enhanced-rider-scheme), this is a great addition to build your skills after passing the full motorcycle test.