12d, 11lets, M?n?t??????, Battle site partially cleared in old city for ugly skyscraper?.
20d, 2words, 2.5. S? T???e, Triumphant put - down of alien in Kent?.
21a, 4lets, P???, Apply pressure with stick.
23d, 5lets, F???t, Old prison ship.
25a, 4words, 4.2.3.6. S??? ?? T?? ?o????, Uptight oneself, start to object to broadcast mistake one hears.
27a, 2words, 3.3. D?? ???, Not a Boat Race rehearsal, then.