Ah, a while ago when 827 was still running I had seen it running out of service into derby bus station with red arrow on the blind. I had hope that it would be the 7.35 trip...However it was the 7.55. 99 seems like its only operating in the morning which I would have it out all day, a free vehicle for them to run and they are only utilizing it for a few hours isn't smart. On Saturday when I got on it, it was nice very smooth that it made me feel sick as well as not being able to see where we are out the front window whereas the plaxtons have massive front windows that you can see out when your sat at the back. Then I was back in derby leaving the bus station around 3pm and it was sat at the bus station on the bit of road next to the old car park. I get it has to have the driver and the extra staff, maybe thats why its not being fully utilizedDuring the adverts, I had a quick look at RA diagrams. 83 on night duty. Around 05.00, in order 87, 82, 84, 81, 83 (back), 80, 86... At 07.55 , 99 appeared. I don't think 85 and 88 are on the road, so had 99 not been available or any spare Mango bus, you get missed diagrams. Looks like the 07.35 is the 8th diagram, and 99 covering the 9th. Seems to suggest the 07.35 and 07.55 maybe the diagrams least likely to run.