Cryptic crossword clue
One closely following actor astride horse, say 6

The most common and most likely answer to this crossword clue is the 6 letter word DOGGER

I've seen this crossword clue in Financial Times
D
O
G
G
E
R


Buddy explains!

The straight part
We know that "One closely following" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one closely following = dogger.
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 DOGGER mean?

DOGGER noun
  1. A two-masted fishing vessel, used by the Dutch.
DOGGER noun
  1. A participant in the sexual activity of dogging.
DOGGER noun
  1. A sort of stone, found in the mines with the true alum rock, chiefly of silica and iron.

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