I think he means SP bus.
Today, 26/10/05,
Thursday
172: 953H
178: 192T
178: 1255H
187: 191X
187: 373G
187: 1254K
187: 1046U
187: 1179U
30: 9050Y (SL SP)
30: 9068Y (SL SP)
30: 9110H (SL 98 )
30: 9819Y (BN 31)
99: 587A (AR 274)
154: 196U (AM SP)
154: 3914U (SL 98 )
157: 120M (AM SP)
174: 3723D (SL 52), freshly repainted
174: 9019P (SL 143)
181: 3915S (SL SP), 304A cameo
242: 9080K (SL SP), 276Y cameo, which was cameoing for another 242
bus
243G: 96A (SL 183), 2999G cameo, which was cameoing for 2998J
243G: 3757G (SL SP)
502: 539P (SL SP)
182: 1780B (SL 154)
182: 7226X (SL SP), weekday DD!
193: 3873D (SL SP)
193: 7199R (SL SP)
193: 7200U (SL SP)
252: 1702C (ex HG SP)
254: 7215C (SL SP)
179 cameos (evening):
179: 9117P (SL 98 ), 9049C cameo
179: 3742Z (SL 52), 9131Y cameo
179: 474S (SL 105), 7236S cameo, which was taken off service
halfway
179 & 242: 9024Z and 9111E swapped places, making 9024Z x-over
to 242