11 across
Peter
Kay
at
last
playing
key
characters
again
(6)
Peter Kay at last playing key characters again (6)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at key characters again at the end — that's your definition, meaning to type something over. Take the letters of PETER, add the last letter of KAY (so that's Y, picked out by "at last"), and "playing" tells you to rearrange the whole lot to get your answer.