If not already mentioned, Glasgow has a full house from 1 to 9 courtesy of First Glasgow. Some of these numbers had been in use prior to the SimpliCITY network changes being implemented in May 2013 (some on completely different routes), which unified them into a group of core services serving the city centre (with one noted exception in the latter regard):
- 1 - Glasgow St. Enoch <-> Balloch: part of 'The One' group of routes; formerly the 204. This particular renumbering predated the SimpliCITY rollout by about 6 months.
- 2 - Faifley <-> Baillieston: formerly extended to Airdrie & Maxim Park/Eurocentral at various times; only the core section remains today. Formerly the 62.
- 3 - Drumchapel <-> Govan: it's effectively the northern half of the 'pre-SimpliCITY' 9 coupled to the southern half of the former 23.
- 4 - Broomhill <-> Newton Mearns: formerly ran to/from Knightswood north of the city centre prior to October 2016; formerly the 44.
- 5 - St. Enoch Centre <-> Castlemilk: one of the few city centre routes to retain it's pre-SimpliCITY number & routing.
- 6 - Clydebank <-> East Kilbride (Calderwood): this one formerly extended out to Mountblow west of Clydebank prior to October 2015, when a new variant of The One (the 1D) took over that section. Formerly the 66.
- 7 - Summerston <-> Rutherglen: in effect the northern half of the old 54 - which was all that remained of that route prior to the changeover, it having been split a few years prior - coupled to the southern half of the old 12.
- 8 - Parkhead <-> QEU Hospital: the aforementioned route that doesn't serve the city centre. Rather, it serves/links up a number of area surrounding it (running via Provanmill, Springburn, Maryhill & Partick). Prior to October 2016, the 8 terminated at Carmyle in the east and formerly terminated at Partick Interchange in the west prior to being extended south of the river to the QEU Hospital complex; it presently interworks with the 16 at the latter.
- 9 - Glasgow Buchanan Bus Station <-> Paisley Town Centre: the last surviving reminent of the old 9.
(All hyperlinked images are my own)
Pre Overground days, I do not recall there ever being a full complement of 1 to 9 in use by First Glasgow. How I recall it back in 1998 is as follows:
1 - George Square/Queen St Station - somewhere east of the city
2 - Cadogan Street - Easterhouse via (maybe Glasgow Cross) Royal Infirmary, Royston Road, Provanmill
3 - Vacant I think (although there may have been a 3 to Barrhead via Pollokshaws Road operated by Clydeside, later Arriva, now McGills)
4 - City Centre - Robroyston via Baird Street, Springburn, maybe Wallacewell Road and Standburn Road or via Quarrywood Road and Robroyston Road (cannot remember exactly which way it went. This also interworked with the 10 that ran via Hamiltonhill and Firhill, now the present day M3)
5 - St Enoch - Castlemilk, with some journeys continuing to East Kilbride via Carmunnock Bypass as the 5C
6 - Clydebank (or somewhere west of Partick) - Cardowan via (unsure of route to Queen Street Station) Queen Street Station, Duke Street, and Cumbernauld Road. Some journeys continued to Glenboig via Muirhead and Gartcosh as the 6A.
7 - St Enoch - Rutherglen which was the former 12A that ran via the top end of Kings Park (unsure if just before the Overground concept was introduced)
8 - Auchinairn Woodhill - Carmyle via Northgate Road, Lamont Road, Old Balornock, Springburn, Keppochhill Road, Bardowie Street, Possilpark Garage, Ashfield, Lambhill, Cadder, Sandbank Street, Maryhill, Byres Road, St Vincent Street, Queen Street Station, Duke Street, Parkhead Forge and Cross, Shettleston, Amulree Street, and across London Road to Carmyle
9/9A - Drumchapel - South Nitshill (9) or Pollok Centre (9A) via Gt Western Rd, Lincoln Avenue, Dumbarton Road, St Vincent Street, Central Station, Bridge Street Underground, Paisley Road West, Corkerhill Road, then the 9 direct to Pollok Centre via Braidcraft Road and Peat Road to South Nitshill, or the 9A to Pollok Centre via Lyoncross Road, and Brockburn Road.