Across
1
Well-informed speculation (8,5)
14
Unprofessional chap? (6)
15
Where plants are grown under glass (10)
19
Constitutionally lazy (4-4)
20
Steam, bubble or bird? (4)
21
Pioneering art (anag) – trip (13)
Down
2
Where photos may be developed (8)
6
In the normal course of events (7)
7
One part of the process (4)
11
Unnaturally high voice (8)
14
Top of a lighthouse? (7)
17
Planet's trajectory (5)
18
Pouting look (from the French) (4)