4d, 2words, 5.4. M?r?a ?o??, Bucks town mostly welcoming busy old traveller.
5d, O?e?a, Turn up some spare police work for the Met?.
7d, 2words, 3.6. N?? ?u?n??. Island resort a genuine source of wonderment.
8d, D???, Very embarrassed after upsetting contents of tank?.
16d, E???????s, Dramatist showing wishful remark from UKIP on fateful day.
18a, 4words, 4.2.4.5. T??? ?? ??e? ????e, Supposedly disapprove as a body, giving rise to underground movement?.