CPD keeps you up to date and in touch with current practice. 

Knowledge progresses over time and better/more efficient ways of doing things may have been developed since you qualified

More information may now be available about why certain practices are more effective through research and clinical trials

"Learning is like rowing upstream; not to advance is to drop back”. Your first skill is just the foundation to your education. CPD helps you to build on that foundation in a structured way.

The emphasis on the role of CPD is gaining momentum; it is already compulsory for some and, under the proposed Voluntary Self-Regulation Schemes, will soon be compulsory for all.

CPD extends your manual/hands-on therapy skills and expertise, and by learning new techniques you will be able to offer more to your clients (and people may start referring to you instead!)