A microlight aeroplane is an Aeroplane in law: ANO Schedule 2. If you have a SEP class rating it should cover ALL single engine piston aeroplanes. (It says it does!)
The CAA have invented a microlight Class rating without any form of industry consultation. There has been no regulatory impact assessment to support this heavy handed beaurocracy, and additional costs incurred because they want you to have two licences to fly what are legally aeroplanes in the same Class.
It is Regulation gone MAD!