### Clue: When nurses survey the head of off-colour hot lads (7)
### Answer: APOLLOS 
 ### Explanation: Definition: hot lads
 AS(when, as in "as you leave the room, please …") **containing**(nurses) [ POLL(a survey of people's views on specific issues taken from a sample group) + **the 1st letter of**(the head of) "off-colour" ].
Defn: Handsome and attractive;hot young men;lads.