The most common and most likely answer to this crossword clue is the 7 letter word COMPERE
I've seen this crossword clue in The Daily Telegraph
C
O
M
P
E
R
E
More clues leading to the result COMPERE
- MC is brother from Bordeaux on committee
- For every income, a host
- TV presenter, hard to miss, who’s chewing over programme’s finale
- Presenter of match on the radio
- Host politician, English, in centre
- Host politician close to office in centre
- Commanding officer and representative before getting MC
- One introducing policeman before arresting Mafia head
- Host is firm – Nancy’s mum must keep quiet
- Move towards hugs for each host
Buddy explains!

The straight part
We know that "Host" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case host = compere.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does COMPERE mean?
COMPERE noun- A master of ceremonies, especially for a television, variety, or quiz show.
- To emcee, to act as compere.