You need to register for the CC discount - £10 for a year. Now worthwhile even for a single visit.

Congestion Charge (Official)

Information about the Congestion Charge

tfl.gov.uk

Boroughs vary as to whether bank holidays are treated the same as Sundays - check the local council website.
Unless the machine/signs explicitly mention bank hols, they are normal Mondays.

 

For the congestion charge you will have to pay for each day.. to avoid this you would have needed to pay TFL a £10 yearly registration fee and upload a copy of your v5. Not sure if you will have time to do that and have the acceptance email back in time for your trip.
The rest I can't help with.

 

In my experience the TFL registration process takes them about 3-4 working days before they confirm acceptance.

 

Ubitricity posts. There are quite a few in the vicinity and seem fairly straightforward to charge overnight. Are they reserved for EVs or do they get ICEd frequently? Are we likely to get a post? If not are there any recommended alternatives in Kennington?

It varies council to council, but most councils still take the archaic view (at least in communications I've had with them) that there are more ubitricity charging points than EVs, and thus marking them as EV parking/charging only would cause a shortage of parking spaces. I actually have FOIs in with three to try and prove them wrong. As such, they are very often blocked by parked ICE cars if not technically 'ICED'.

That being said, some ones now have collars on them specifying they're for resident permit holder EVs only only, and I have now seen two EVs ticketed for charging in the 'wrong place' as they were not residents (one was an i3 from East Devon). I feel its slightly absurd they can be ICED totally fine, but a non resident charging on them risks a PCN.

One alternative might be Source London - they generally install 2 chargers, one 22kw and on 7kw and you can reserve the charger in advance with dedicated EV-only charging spaces. Of course there's also now a growing collection of rapids (including I think 6/7 MFG stations with at least 4 150kw rapids) popping up around London.

All in all, I think you should be fine.

 

I use google earth street view to try to read roadside parking signs.
Single yellow on a Sunday is normally fair game for all day freebie parking > BUT < check to be sure.
As per above it may not be the case on a Monday, and, some areas may be different.
Also a lot of 'permit X only' areas.

So I have a dekko on street view and develop plan A from that, then parkopedia type app for Plan B where I might have to drop off the passengers and then go find an NCP and a second mortgage.

 

Also a lot of 'permit X only' areas.

Yes, and resident's permit areas can be enforced at any time of the day or night so check the signage before leaving your car parked, even if it's 9 o'clock in the evening (it may be OK, areas differ, so check.)

 

You can normally park quite cheaply in the National Theatre Car Park in Waterloo, especially if you pre-book online, and it has EV Charging.

From there it's a half an hour walk/bus to Kennington or a few stops on the Tube from Waterloo.


Not specifically what you asked for but a good plan C...?

 

There's also some ESB rapid charges in or near that area. They can be quite busy, but the app has real time use info, and they're not regular parking spaces, so shouldn't be ICEd.

 

Lambeth CPZ map linked here :

Controlled Parking Zones (CPZs)

Controlled Parking Zones are areas where parking controls have been introduced to protect the parking needs of residents, businesses and their visitors. There can be several different types of parking restrictions within one CPZ. The controlled hours for single yellow lines will be displayed on...

beta.lambeth.gov.uk

Looks like most of Lambeth's restrictions are OK to park on bank hols :

Parking on bank and public holidays

Parking restrictions are often relaxed on bank and public holidays, but you must ensure you check signs carefully before you park. Where you can park on bank and public holidays 'Pay for parking' bays (free of charge on bank holidays only). Resident permit holder's only bays. Business permit...

beta.lambeth.gov.uk

 

Just thought I'd add a word of thanks to those who gave good advice for my recent trip. I applied for the congestion charge discount and it was processed within about four days. I checked with Lambeth council and because we were parked up over a bank holiday Sunday and Monday there were no parking fees. Finally the Ubitricity post worked very well (no membership or app required, just a QR code and bank card details) and gave me a full overnight recharge for the return journey, and at a reasonable price.

We even got a free top up on the M1 going south due to a fading Ecotricity post at Leicester Forest East. Happy days.

So thank you people, a very straightforward, successful trip. 👍

 

Finally the Ubitricity post worked very well (no membership or app required, just a QR code and bank card details) and gave me a full overnight recharge for the return journey, and at a reasonable price.

Glad to hear you had a successful trip south, and that you found an available Ubitricity post! I think they've managed to create quite a neat product in terms of both hardware and software and I look forward to their wider rollout.