### Clue: Gloomy ruler digesting intellig­ence for 22's leading figure (5,4)
### Answer: SADIQ KHAN 
 ### Explanation: Definition: 22's leading figure
Sadiq Khan is the Mayor of London i.e. a leader in the UK's CAPITAL city
 **SAD**="Gloomy" + **KHAN**="ruler", around **IQ**="intelligence"