13D Main or important entrances (5,5) alternative clue; They give access to facades round reversed cross. ?R?N?D?O?S is the answer front doors or grand doors?
4D Secret forces deploying empty shells in emergencies (9,6)
18A Two expats, regularly missing, got emotional (4)
7D Order a brew in a posh pub (4,3)...
5D Ready for American weakling to describe principle (8)
19D We're a couple under 13 - Dicky and Lesley (6) E?G???
15A Function one spotted being indefinitely adjourned (4,3) S???D??...