Crossword Genius

So, no end to working alone (2,4,3)

Ross

I believe the answer is:

on ones tod

'alone' is the definition.
(I've seen this before)

'so no end to working' is the wordplay.
'working' is an anagram indicator.
'so'+'no'+'end'+'to'='sonoendto'
'sonoendto' is an anagram of 'ON ONES TOD'.

(Other definitions for on ones tod that I've seen before include "Alone" , "solo" , "reverse of 9 [AIDED] ?" .)

I've seen this clue in The Telegraph.
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