Atlas Editions advertised a London Transport RTW model in early 2008 via flyers in selected Sunday newspaper supplements, the model was advertised for £1.99 and supplied in an OOC style plastic display case with card outer box bearing both Atlas Editions & Corgi branding. This first version of the RTW doesn't appear to have resulted in any further models being offered to customers who purchased it, so one can only presume either the take up at the time up wasn't deemed high enough or the takeover of Corgi by Hornby around this time put the collection on hold.

In early 2010 flyers once again appeared in Sunday supplements and various bus & model magazines, again an RTW model was offered for just £1.99, this at first glance appeared identical to the 2008 version but on closer inspection it was clear this was actually a new version bearing a different registration plate and additional front advertisements. The model was this time supplied in a more basic card box bearing a line drawing of the vehicle, it was however secured to a plastic plinth bearing a description of the model and operator.

Responding to the flyer resulted in delivery of the model and details of seven further items, these were released at the rate of roughly one per month and although the second model was offered at an introductory price of £7.00 further releases were priced at £17.99 including P&P. The second model was also supplied with the following free gifts: Collectors Card Album & 12 Collectors Cards , Best of British Buses DVD, RTW Travel Clock & London Transport Cap Badge.

Atlas Editions has stated it has plans to release 31 models which may be increased if the collection proves popular. The models are branded as the Great British Buses Collection and will all be based on existing OOC tooling. Apart from the Routemaster which will be produced by Corgi, all the other models will be manufactured by Atlas Editions themselves using tooling loaned to them by Corgi.

The models themselves seem to be based mainly on previous OOC releases but with minor alterations such as different registration numbers and route details. The models are also less detailed compared to standard OOC versions and lack certain items such as driving mirrors, etched windscreen wipers and many of the smaller decals including fleet numbers.

The models and packaging don't actually carry any obvious reference codes but a small code is printed on the base of the box. I've given the models an unofficial GBBxx code which will reflect the order in which the models were actually released, the Atlas codes are also shown on the individual model pages where known.

The release dates shown are the earliest known issue date for each model, in practice dispatch to some customers will have been much later based on the initial application date or variations in the order in which the individual models were dispatched.