Possible Clues:

• Extend or draw out
• Let down many an engineer afterwards
• Grow subsequently, following nitrogen injection in limb
• Student taking some English afterward has to protract
• Extend part of journey round North, in that case
• New parts on, so spin out
• Fast woman describes good stretch
• Limb across base of divan, upon which to stretch out
• Give more of a line perhaps to novice on Little England nonetheless
• Stretch student with English afterwards