Lancelot

[Gmac]

3d Poor Show
14 a One employed to sell thought purveyors but that puts the 1st letter of Inspector Morse as O

[Lie-in King]

3d Bad form
14a Marketeer

Hi Gmac - it's always nice to include the numbers of letters & any you've placed, so that people without the puzzle can more readily help you - thanks! :-)

[Gmac]

Thanks Lie in King

[picturepost]

first name for morse in endeavour

[cupid04]

bad form
marketeer