How do I solve 27 across in Daily Telegraph Cryptic 31258?

Question

Accepted Answer

27 across reads "Guy fined in Barking is not improving" (10 letters); the answer is UNEDIFYING. It's an anagram clue: the answer is a rearrangement of letters supplied by the clue itself. Look for an indicator like 'mixed', 'broken', 'cooked', or 'wild', and find a phrase whose letters add up to the answer's length. The full step-by-step breakdown is on this page.

Guy fined in Barking is not improving (10)

27A — Guy fined in Barking is not improving (10) — UNEDIFYING