10a. Serious student left overcoat in A&E (7)
****E**
13a. Wayward son's in greek Island and old Cretan city (7)
****s**
4d. Boycott part of course that's hugely attractive (5,4)
B**c*, *o*e
5d. Material is somehow thin and supple inside (7)
L*****e
8d. Franchisees sell up, constraining tenant (6)
*****e