2611: On-board entertainment

Unclued lights are all of a kind. The most recent addition to the group must be highlighted in the completed grid.

Across

8    Black swan leads gull (4)

11    Jack holds irrational animal (5)

13    Politician hosts old leader – he has a shock (7)

14    Little US weakling (5)

17    Extremely agile, running for an age (4)

18    E.g. cotton, some normal variety (5)

19    Breaking of rules? It’s us! (7)

23    Loving American figure who’s worshipping (7)

25    Educates radical Puritans (8)

26    After local’s alarmed, I’m leaving omelette (8)

27    Marshal then in charge of races (6)

28    This person’s friend holds a religious office (7)

33    Message by a painter in baffling language (6,1)

34    Sneak softly behind Native American (5)

35    £1000 saving returns – it’s interest (4)

37    Part of plant son confused with 8 (8)

38    Cricket side winning, getting help (3-2)

39    Bond for piece of drapery (7)

40    Typist organised notes (5)

41    Old coin’s not fake (4)

Down

1    Writer attending court date (6)

2    Opposite of 41 encampment (4)

3    Arsenic found in cattle enzyme (6)

4    You’re more tanned than me, Vlad! (7)

5    Reworking of tuneless instruments (4-6)

6    Smasher of mobile phone on mobile (6)

7    Again bringing in control, government seizes moment (11)

8    Is Alan able to groove? (5)

10    Times workers will pocket unknown coins (7)

16    E.g.