stuck on a few:
11a Clothe or dress formally (6) E?R?B?
13a Communal, neighbourly (6) S???A?
18a US Cattle breed (5,8) ??X??,????H???
27a Sickness, infirmity (3-6) ??L-???L??
28a The senior female of a body of colleagues (7) ??????E
Thanks in advance. Hopefully will be able to solve the Down clues when I get these filled in.