NUCLEARSUB

CONTAGIOUSLike laughter, sometimes KOOKABURRAThis bird sits in the old gum tree (10) DUSSELDORFEuropean city recovering from disappointment, investing not as much (10) ALASKAROLLSushi bite topped with salmon BEAUTYMARKEnhancing "blemish" (3x) ISLEOFDOGSReportedly, I adore residents of Battersea, part of London SETTOMUSICNoted work? GARDENHOSEKid’s knocked over shed one rebuilt – a wind-up for the horticulturalist? (6,4) EMANCIPATEEuropean chap worried about withdrawn photo's release BROOMSTICKWitch carrier (10) SOMEPEOPLE"Unbelievable!" ... or what 17-, 25-, 35- and 46-Across are made from, letter-wise? ENANTIOMERAwkwardly mention ear — it's one of a pair, the mirror image of the other POKERFACEDExpressionless, particularly when playing cards (5-5) OSTENSIBLEPretended back in Tokyo Biles managed to claim perfect scores