Airport Schedules 1981 and Airport Timetables UK 1985 has Dan-Air operating a nearly identical HS748 service on Leeds-Guernsey:
Saturday & Sunday DA441 depart LBA 0830, arrive GCI 1015
Saturday & Sunday DA448 depart GCI 1845, arrive LBA 2030
In between times the aircraft looks to have done GCI-BRS-CWL-BRS as DA272/273 and spent some time on the ground in Guernsey. The weekday HS748 service GLA-LBA-BRS-CWL also looks to have worked its way through the Channel Islands every lunchtime.
On Metropolitan, I've got the 1985 Summer timetable (hues of metallic gray and blue) which I'll try to scan in and post if I can. By today's standards, it's rather random.
Monday-Friday Shorts 330 on LBA-GLA-LBA-CWL-BRS-CWL-LBA-GLA-LBA (which was the only consistent thing they did).
330 at Bournemouth did:
RD 050 Mon/Wed/Fri BOH-CWL-MAN-NCL-GLA and reverse as RD057 in the evening
RD 052 Tue/Thu BOH-BHX-MAN-NCL-GLA and reverse as RD059 in the evening
The 330 at Glasgow did the reverse routings, so
RD051 Mon/Wed/Fri GLA-NCL-MAN-CWL-BOH and reverse as RD058 in the evening
RD053 Tue/Thu GLA-NCL-MAN-BHX-BOH and reverse as RD056 in the evening