Across
10a
Seat: I offered support for member not returned PM (9,5)
See 9
See 20
London borough cut back foreign money (7)
Clifftop home creepy, we hear? (5)
Endless suffering: Boris's heart consumed by power issue (9)
22d
Backtrack twice and workers lit up by party leader? I don't believe you! (4,4,5,2,4)
Are various small birds travelling west, after starling initially again takes over (9)
Radioactive element in preservative for good health (5)
Middle 2 from 4 (x 2) for shipment (7)
Was PM unprejudiced, where only the elite accommodated? (7)
Discuss roads home (5)
Back to basics here, as Conservative taking drugs? (6,3)
Down
Where lies circulating around famous Downing Street figure, might this have extra traction? (3-7)
Mastermind tune for worms (8)
Individual absorbed by course, virtually complete (6)
Guns raised for quarry in glen? (4)
One sport he worked on, nearing defeat (2,3,5)
Sloth near Ealing fed last of spaghetti (8)
See 18
Report scale and method as liquid strained (4)
Boris, penning newspaper material that's shabby, is for the practical approach (10)
Stallion's back on course — whereas this one isn't (3-7)
Final drink full of street talk (4-4)
7d
In fun, absolute ruler's beginning to splash out — he can certainly afford it! (6,2,6)
23d
Question put to liquidator by business, seriously? (3,3,7,2,2)
Those speaking for author (6)
See 16
See 20
Type letters or click words in the clue