Crossword Genius

Old Latvians one allows to go around the West End (5)

Ross

I believe the answer is:

letts

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'old latvians' is the definition.
'letts' can be an answer for 'latvians' (I've seen this in another clue). I am not certain of the 'old' bit.

'one allows to go around the west end' is the wordplay.
'one allows to' becomes 'lets' (I've seen this in another clue).
'go around' indicates putting letters inside.
'end' indicates one should take the final letters.
The last letter of 'west' is 't'.
'lets' going around 't' is 'LETTS'.

Can you help me to learn more?

I've seen this clue in the Evening Standard.
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