### Clue: The masses head into Nicosia regularly on early part of holiday (3,6)
### Answer: HOI POLLOI 
 ### Explanation: Definition: The masses
HO ("early part of HOliday") + POLL ("head") into (n)**I**(c)**O**(s)**I**(a) 
Had never come across POLL for "head" before, but it's in Chambers.