Ham Radio is…

* a source of ongoing investigation and innovation in radio communication

* a way of drawing people into a technical activity which can result in them pursuing a career in engineering, so enhancing the technical skill base of the United Kingdom

* a source of emergency communications at times when conventional communications links are strained or out of action

* a contribution to international friendship

* a rewarding and challenging leisure activity

Source: OFCOM

Tnx @Fabio IZ5XRC for the hint!