Is there a date for when Thameslink will be an all 700 railway?
We should be able to piece that together from information we have been told on this forum and elsewhere and make some reasonable guesses at July / August time.
There are now 11 700/1 and 17 700/0 diagrams, 15 700/1s (700101-700115) and 23 700/0s have seen service (700002/3/5-10/4-21/3/5/7/30/1/6/9) with some of those having then been taken back out of service for testing. On top of that there are something like another 12 700/0s in the UK (700004/12/24/8/9/32/3/7/8/40/5/6). That leaves 11 more 700/0s (700001/11/3/22/6/34/5/41-4) to come in phase 4 before the next 700/1s arrive (although presumably there will be a little overlap).
http://www.railforums.co.uk/showpost...postcount=1349
The batches of 700 deliveries have already been announced.
1 - 11x 12 cars
2 - 6x 8 cars
3 - 4x 12 cars
4 - 40x 8 cars
5 - 30x 12 cars
6 - 12x 8 cars
7 - 10x 12 cars
8 - 2x 8 cars
Deliveries seem to be roughly weekly and introduction of additional workings two every two weeks. Postings elsewhere suggest 33 319s and 15 377/5s remain in service (which must be about 22 diagram pairs in service).
So, if two additional workings are introduced every two weeks from now, 22 weeks takes us to some time in July / August. 23 more 700/0s to enter service seems to be about equal to the numbers of 319s and 377/5s in service (allowing for the double length and no need to have spares of both classes).
I guess that further 700/1s then start replacing 3x377 on London Bridge to Horsham and London Bridge to Brighton services and the London Bridge to Littlehampton / East Grinstead peak services.
Once that is done, presumably they start on removing half of the 365s from Great Northern routes using the next lot of 700/0s (and any 700/0s they can displace from Brighton line workings using the next 700/1s).