### Clue: Cunning Brexiteer speaking in support of Chequers at first (6)
### Answer: CLEVER 
 ### Explanation: Definition: Cunning
Homophone of **LEAVER** ("Brexiteer" speaking) *in support of* **C**(hequers) [at first] 
Hate this clue, as the LEVER part of CLEVER is not pronounces as LEAVER.