Chap determined to get to Southend (4)
I believe the answer is:
seth
'chap' is the definition.
'determined to get to southend' is the wordplay.
'determined' becomes 'set' (similar in meaning).
'to get' means one lot of letters go next to another.
'to southend' becomes 'h' (I can't explain this - if you can you should give a lot more credence to this answer).
'set'+'h'='SETH'
Can you help me to learn more?
(Other definitions for seth that I've seen before include "Cain/Abel brother" , "Early human" , "Indian novelist, Vikram" , "One of the first men" , "Boy" .)