Where, by touring the land, one may have shot to success (6)

I believe the answer is:

bisley

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'the land one may have shot to success' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'where by touring' is the wordplay.
'where' becomes 'isle' (I can't justify this - if you can you should give a lot more credence to this answer).
'touring' means one lot of letters goes inside another (touring can mean going round).
'isle' going into 'by' is 'BISLEY'.

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I've seen this clue in the Evening Standard.

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