Possible Clues:

• 'Refayned'
• Well-bred chap goes to fish
• Information on St Leger regularly left - so polite!
• Well-bred fellow demands fish
• News at Ten's first item something hard to grasp, to be polite
• Well-bred member in retirement entertaining scruffy teen
• Suited to polite society
• Well-bred chap confronting devious character
• Cultured chap, a slippery customer
• Affectedly polite (... this answer's first 4 letters)