Clue: Singer Jones carries on, not yet proven (7)
Answer: ALLEGED
Explanation: Definition: not yet proven

**ALED** (Jones, "singer" and TV presenter) *carries* **LEG** (the "on" side in cricket)
 

 
*For non-UK solvers, who may have seen the TV animated adaptation of Raymond Briggs' *The Snowman *(a Christmas staple here), Aled Jones was the treble voice who sang *Walking in the Air *(the song also reached No 5 in the UK charts in 1985) His daughter Emilia was recently nominated for an Oscar for her role in CODA.