ACROSS
 1 Sailor-neighbors of Chaucer’s wife? One might consider them tubby. (4,5)
 6 Like a porch philosopher? (5)
 9 Such a fever with typhoid! (7)
10 See 15 across
11 See 30 across
12 Working on an essay, thereby causing some strain. (6)
13 Safe isn’t with one, perhaps. (Especially breakfast food, after the first of the year.) (4)
15 and 10 Some cut, for example, made by an actor. (6,2,7)
16 Low Shakespearean comedian? (6)
18 To withstand broken rest is what a movement may want to do. (6)
20 Traditionally demands representation. (You might consider it not a bad sort around a tool.) (8)
23, 25 and 28 Sound the bugle with what might suggest taps, but don’t do it consistently. (4,3,3,4)
24 One who shares a place in the sun with John Bull? (3,3)
25 and 28 See 23
29 Pompously mouthed. (7)
30 and 11 across Relative to a buck, you might make something out of it. (8)
31 Southey and his friends keep a lost cause for them. (4,5)
 
DOWN
 1 Descriptive of the house of Boz. (5)
 2 She fell for 16 across. (7)
 3 Sort of treats the main point like a good tactician. (10)
 4 Rover, perhaps, is fortunate to be so. (5,3)
 5 and 17 down Certainly not the first technical manual, though it still might be a first edition. (10,4)
 6 You can see through what it holds for the band. (4)
 7 There might be no let-up here, though it makes a poor antonym. (7)
 8 Not included in the lay of the land. (9)
14 Such an organization makes its voice heard. (5,5)
15 Box material may be one of the things in hand with directors. (9)
17 See 5 down
19 Change of speed on foot. (7)
21 Kept in firm environment. (2-5)
22 Musician who sounds somewhat of a crank. (6)
26 They’re reputedly not waiters that come in and go out. (5)
27 Bulldozes animals? (4)