The most common and most likely answer to this crossword clue is the 5 letter word GUIDE
I've seen this crossword clue in The Guardian
G
U
I
D
E
More clues leading to the result GUIDE
- Reporter's sent up handbook
- Mentor first to give you fish
- Take the lead when little Edward turns up after guys under instruction, initially
- Handbook for girl in uniform
- Fine for Scots to have English escort
- We’d be lost without him!
- Mountain leader good on Ben Nevis taking English?
- A leading publication?
- Escort French author around university
- Lead British 17
Buddy explains!

The straight part
We know that "escort" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case escort = guide.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 GUIDE mean?
GUIDE noun- Someone who guides, especially someone hired to show people around a place or an institution and offer information and explanation.
- A document or book that offers information or instruction; guidebook.
- A sign that guides people; guidepost.
- Any marking or object that catches the eye to provide quick reference.
- A device that guides part of a machine, or guides motion or action.
- A spirit believed to speak through a medium.
- A member of a group marching in formation who sets the pattern of movement or alignment for the rest.
- To serve as a guide for someone or something; to lead or direct in a way; to conduct in a course or path.
- To steer or navigate, especially a ship or as a pilot.
- To exert control or influence over someone or something.
- To supervise the education or training of someone.
- To act as a guide.