Across
Foreign noble at a fine high-class French palace (13)
Governed as certain lines may be (5)
Shocking weapon to put out by extremities of tower (9)
Payment hard old woman initially invested in drink (10)
Repeat part of speech occasionally (4)
Humdrum character given note by European national (7)
Endlessly respect a Liberal naval commander (7)
Woman touring hot area north of a desert (7)
Unleavened bread originally ideal with tea and a little butter (7)
Become tedious letter-writer, by the sound of it? (4)
Philosopher with authority becomes factory designer (10)
Tough soldiers tight-lipped about start of invasion (9)
Follow Europe's directions to return (5)
Stealthy new Tories stir up unions at first (13)
Down
First pair of thespians engaged in leading role, mainly (3,3,4,4)
Synthetic polymer unknown in northern half of capital (5)
Tree a woman planted outside new councillor's office (10)
Teachers meeting with old actor: that bears fruit (3-4)
A snag over admitting curtailment of party spirit (7)
Mutton graduate gives girl (4)
Rash old city teacher primarily in charge of some music? (9)
Teacher takes train, overcoming motorway tension (14)
Flaw in flyers plugging this writer's point (10)
Negative thinkers sit in his complex outside Lima (9)
Greenness of mineral water upset over ends of table (7)
French novelist briefly keeping island bird (7)
Travel round America, having time and energy (5)
Smear second book excluded from promotional hype (4)
Type letters or click words in the clue