Just as a note: The fleet lists have 4949 and 4950 as having the same reg.

4956-4966 were introduced in 2002. These replaced (the now withdrawn Renowns - inc 340 GUP) on the 194/294.

Initially in the original GNE livery, the vehicles were repainted into the swoop livery circa 2006 and the 294 was axed. The 194 was renumbered the M1.

In 2010(?), the route was rejigged and the yellow livery was introduced.
During the summer of 2013, vehicles were gradually repainted into their new base colours, prior to the arrival of the Citaro's on the 4.

5229-5233: Were allocated to Deptford from new in 'swoop' livery and branded for x20/x50. You have the rest, although it was in x20 Prince Bishops Express before resorting to Prince Bishops.

The vehicles initially branded for Cats Fast, were at Percy Main from new on the Route19. They had special wheels fitted to the front for a busway somewhere up that way.

Again, don't have specific dates as I am going off memory alone - but hopefully it will help narrow things down somewhat.