Sorry, there are more!
13a person who plots a course for a ship or plane (9)
17a evergreen tree (7)
19a absorbed(9)
24a ballroom dance derived from a Cuban dance(5)
25a large showy white pink purple or yellow flower (8)
26a Latitude, scope (6)
2d Russian physiologist who studied conditioned reflexes in dogs (6)
3d 16th century English sailor and explorer (7)
4d Comfort (8)
9d Student taking his first degree (13)
16d Type of beer (5,3)
20d Figure of speech (6)
Any help at all is much appreciated, sorry there are so many, illness has caused problems. Thank you.
5d Warrant officer on a warship (5)