Keeping going forward in London, for example (11)
I believe the answer is:
pertinacity
'keeping going forward in london for example' is the definition.
I can't judge whether this defines the answer.
'keeping going forward in london for example' is the wordplay.
'keeping' means one lot of letters goes inside another (some letters kept inside).
'going' becomes 'a' (I am not sure about this - if you are sure you should believe this answer much more).
'forward' becomes 'pert' (both can mean cheeky or disrespectful).
'london for example' becomes 'city' (london is a kind of city).
'pert'+'in'+'city'='pertincity'
'a' inserted within 'pertincity' is 'PERTINACITY'.
Can you help me to learn more?
(Another definition for pertinacity that I've seen is " Stubbornness".)