I also see a far away land which a certain bear arrived at Paddington from.

It could also be Hayes instead of Hayes & Harlington although Hayes is of course the full name of a station that does not have trains from Paddington.

4.  Aberdeen, Dundee, Edinburgh, Glasgow, Inverness, Perth and Stirling.

Scotland does have eight cities now though since Dunfermline was given the status in 2022.  Had Elgin's bid been successful instead then maybe the trains would have been renamed Inter8City.

I seem to remember back in the 1990s Great Eastern Railway having the idea of using commuters as guards although it never came to anything.

I even remember being able to get Wales Today back then (this was north Taunton though so may not have been possible everywhere in the town).  Everyone seemed to have their aerials pointing towards Mendip but this may have been different elsewhere.

I remember getting Points West in Taunton rather than Spotlight.

AFAIK^▸ (as far as I know) it's still AB from St Erth to the first stop signal controlled by Roskear Junction with a tail lamp camera provided to allow Train out of section to be sent once the train has cleared the section.

Unfortunately the Down Main from St Erth to Marazion did not become fully track circuited in the 1974 scheme, the 1974 Sectional Appendix says that for any train heading for Long Rock depot or No 1 siding, the guard must inform the Penzance signalman whether or not the train is complete with tail lamp.  I'm not sure why a tail lamp camera was never provided here since when St Erth was switched out late at night it could be quite a restrictive arrangement.

14 Glasgow Central.

You can head west from Stratford by three different routes and arrive at Liverpool Street but one of these is of course the London Underground Central line and all three will take you to different parts of Liverpool Street so this may well not count and definitely would not if it has to be three different directions out of the platforms.

https://www.bbc.co.uk/news/uk-england-bristol-64965693

That won't be easy though since the WECA lacks the council tax precepting powers which the other combined authorities have.  It would appear that South Gloucestershire Council will not agree to the introduction of such powers.

No, it is part of the North Somerset Unitary Authority.

Looking at the list for the South West at https://www.gov.uk/government/news/find-out-about-every-new-transport-project-in-your-region it includes
When in reality it will be reopening the two stations on the existing line.

Also seems Plymouth is finally back to hourly throughout the day after what will have been more  than  three years with some two hour gaps in service.  Not sure about the diagramming but could this mean more single  Voyager workings?

Edited, I was thinking too much about that early arrival into Plymouth when I was typing that.

The early morning  fast Plymouth service is no more.  Instead, there will be 0600 via Bristol service, calling at Reading, Didcot  Parkway, Swindon, Chippenham, Bath Spa, Bristol Temple Meads, Bridgwater, Taunton, Tiverton Parkway,  Exeter St Davids, Newton  Abbot, Plymouth and as then as before  to  Penzance.  This does however still provide an arrival in Plymouth  before 1000 which I believe was one of the reasons the current 0637 was introduced.

A three hour public journey time to  Plymouth will still be possible though with the 1004 to run non-stop between Reading and Exeter (as it used to do when it was the 1006 Cornish Riviera before December  2019) with a public arrival time in Plymouth of 1304 (1305 WTT^▸ (Working Time-Table)).