JOINFORCES

KOOKABURRAThis bird sits in the old gum tree (10) BROOMSTICKWitch carrier (10) EMANCIPATEEuropean chap worried about withdrawn photo's release DUSSELDORFEuropean city recovering from disappointment, investing not as much (10) ENANTIOMERAwkwardly mention ear — it's one of a pair, the mirror image of the other ISLEOFDOGSReportedly, I adore residents of Battersea, part of London CONTAGIOUSLike laughter, sometimes ALASKAROLLSushi bite topped with salmon SETTOMUSICNoted work? GARDENHOSEKid’s knocked over shed one rebuilt – a wind-up for the horticulturalist? (6,4) SOMEPEOPLE"Unbelievable!" ... or what 17-, 25-, 35- and 46-Across are made from, letter-wise? BEAUTYMARKEnhancing "blemish" (3x) ADAMSAPPLETerribly mad as fruit is stuck in one's throat PYTHAGORASGrasp a hot problem about unknown philosopher