Official Southern Engineering Works Notice about rail replacement bus as below from their website and says it runs Monday to Thursday this week inclusive. No mention at all of a parallel diverted train service on Monday and Thursday evening too or a train service instead of the RRB and no mention of it being Set Down Only. So it would only possibly be entitled to be Set Down Only south of Dorking on the basis that the normal 2325 last train from London Bridge is presumably Set Down Only in the published timetable (if there is one with this timetable being an ad-hoc emergency one only brought in on Jan 3rd) for the last four stops.
So in principle I could get one of the South Western or Southern services to Dorking and wait for it there for an hour and a half or so but I must stay I probably wouldn't entirely trust it to turn up if there was nobody travelling on it when it got to Sutton. If it was going on a long term basis and I established with one of the bus drivers that they had to make all the stops up to Dorking then I would feel safe to go to Dorking instead, although somewhat suspect the Station Supervisor might try and kick me out of the waiting room at Dorking after the last train, although he really shouldn't be entitled to given that a Rail Replacement Bus is a train service and hence surely come under his duties and responsibilities.
Clearly Train Planning or timetabling have messed up in having left the 2325 service from Victoria in the timetable on Monday and Thursday instead of replacing it with this RRB on Monday and Thursday as well as on Tuesday and Wednesday as they obviously should have done. But what can we expect from a team who forgot to extend a service from London Bridge to Sutton in late October down to Horsham via Dorking as was promised in the engineering works notice for the event........
Here is the Southern notice about the train as follows:-
Planned engineering work for Today
Amended 23:25 London Victoria to Horsham service from Monday 14 to Thursday 17 February
Date:
14 February - 17 February 2022 11:59 PM
Routes affected:
Between London Victoria and Horsham
Engineering work is taking place between Streatham and Sutton, resulting in the closure of some lines.
The 23:25 London Victoria to Horsham service will not stop at stations between Balham and Sutton.
There will be a rail replacement bus in place from Balham to Horsham, calling at all stations.
Check before you travel:
You can plan your journey using the National Rail Enquiries
Journey Planner
Replacement Bus Travel Advice:
For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use
this page.
You can find the location of your bus replacement by checking station signs or by searching for your station on our station
information pages.