I agree also 1000-1028 & 1030-1050. I'd hope that the 08, 09 and 10 reg buses would be withdrawn before these and maybe even the 11 reg.
The numbers don’t add up for that. The overall fleet size is likely to be increased as a result of the second batch of 48. So whilst 48 buses are being added to the fleet, it is unlikely 48 will be removed.
The introduction of 701-750 will have ultimately replaced 841-850, 929-931, 933-936, 937-945. That is 25 vehicles. I’m not saying all of these will be permanently withdrawn either, but rather these are for the moment surplus, or will be soon once everything is moved.
East Coast and Lothian Country received additional vehicles. ECB went up by 11 (6 double deckers, 5 single deckers), while LC went up by 6 double deckers only for X19. LC should pick up a further 2 extras in the form of 464 and 465 (replaced by 732 and 746) which takes the total number of what’s left - the city extras to 11. Coincidentally this was exactly the number the very first batch were (701-711). Most of the increases for the city were out of Longstone.
It is worth noting this is different to how it was originally planned. ECB’s 6 extras were supposed to be made up from the 6 white 09 plates for the school runs/peak extras. 934-935 never moved across and 933 was ultimately moved to Longstone from ECB to join the former 2. In this plan, 496 would not have moved across. 497-510 would have simply replaced 937-950. Instead, the white examples are being taken off with 496-510 fully added and just 937-945 taken off. 936 was kept at LC for and still is covering 1045.