Carries on with English nurses — about ten! (7)
I believe the answer is:
extends
'carries on' is the definition.
(to extend something is to carry it on)
'english nurses about ten' is the wordplay.
'english' becomes 'E' (abbreviation).
'nurses' becomes 'tends' (to tend someone is to look after or nurse them).
'about' means one lot of letters go next to another.
'ten' becomes 'X' (Roman numeral).
'tends' after 'x' is 'xtends'.
'e'+'xtends'='EXTENDS'
'with' is the link.
(Other definitions for extends that I've seen before include "Makes longer" , "Reaches or stretches out, say the hand of friendship" , "Enlarges" , "Widens" , "holds out" .)