Cryptic crossword No 434

Across

1. Keener student first at university (7)
2. Knight Hospitaller initially interrupts fair lady undressed (7)
3. Stake laid, checks first of pack (5)
4. Artist's impressions of PostMark in 'heavy breathing episodes'? (9)
5. One seeking return from Paris, perhaps, is first to Troy (10)
6. With maiden offerings outraged shareholders lose original capital (4)
7. Soldier princess from Europe briefly associated with Company of Stationers (11)
8. Ungenerous behaviour shown in buffet (4-7)
9. Every single cleaning product reduced by a third (4)
10. River Test associated with manufacturing (10)
11. Seaside town cameo with Mr Bean accidentally mislaying a note (9)
12. Shaven Breton's returned recorder (5)
13. Leaves and reeds disturbed on way back (7)
14. Document describing 'potties' removed from post (7)

Down

1. Members of staff ran Central European country (6)
2. Free intimacy meaningless without saucy clothing (6)
3. Fittest athletes, in training, welcome breaks (10)
4. Drive away giving lift to outcast (5)
5. Signs laid out instructions for players going from pitch to pitch (9)
6. Dead on time - certainly not! (4)
7. Liberal with savings originally invested in institution (8)
8. Ignore dust, icon's in need of restoration (8)
9. Shed light on clue for 'Berthing' possibly? (8,2)
10. Hereby announcing 'Romeo and Juliet' and 'Thelma & Louise'? (9)
11. Much appreciated rain spread seed about (8)
12. Mountain climbing society installing eccentric notices (8)
13. Interruption as last two constituents shown in separately: Rishi somewhat nervous (6)
14. Fussy using old currency demanding date for new (6)
15. Upset swan in unsettled surroundings (5)
16. Mark eventually calls on motoring organisation for pick up (4)