4d Lug hay roughly after alarm causes expression of mirth (5,5) B-L-Y/-A-G- (is iy belly laugh - if so I get the laugh from the anagram but where does the belly come from?)
16a Assistants take flight after a day in Rome (5-2-4) --D-S/-E/-A--
21a Advance payment for family servant of long standing (8) -E-A---R
6d Wrong French river for this reptile (8) --R-O-S--...
14a One lacking filth is inclined to enter Church right? (8) C-E-N-E- 24a Legendary king returns in one location of biblical tribe (9) I-R-E---E (is it Israelite) 22d Laghprovided by a mediterranean...
12a Story to introduce the German songs (6) __E_E_
7d Fellow who has to get up to make a journey (8) H_R___A_N (Horseman?)
8d A humourless condition evident in ex-believer (8)A_O___T_...
9a Samuel's teacher has turned out to be a prophet (6) _L_S_A
11a First man to devise outlet in wrought iron (8) _N_E_T_R
26a Study, entering further exam, as a hospital doctor (8) R_S_D___...