I'm a member of the Rotherham branch, newbies get their first 2hr assessment ride free with one of our Observers. You will then get a de-brief on where, if any, improvements could be made.
If you then want to sign up, they will be pleased to take you on and take some money off you. See link below.
As Grizzly To55er says quite a few IAM and ROSPA groups not far from you, you need to find the one you get on best with, its all down to the individuals involved really, you have the IAM Rotherham and Sheffield mobs locally and West Yorkshire Group of ROSPA which meet at Garforth with Tutors dotted around the area, I'm based in Conisbrough and have riders from Sheffield, Bolton on Dearne Swinton and Doncaster. If you are interested pm me and I will send you the motorcycle training officers email details.