A tip on finding EV charge points when you are using motorways it to use Zap Map & look around motorway junctions, there are many springing up just off the junctions at petrol stations, supermarkets & pubs. Be aware though that during lockdown many of the pubs car parks have been commandeered by travellers & many of these chargers are blocked off, Zap Map should have a comment in the logs for that charger.
Locations with more than 1 rapid charger are always more preferable in case one is taken or fails to provide a charge. If you do get stuck with no Rapid charger then consider topping up at a Fast charger (7,11,22kW AC charger), it’ll take an age but you can take enough charge to get you to the next Rapid charger.
ALWAYS look at the charge logs for the chargers you are planning to stop at before heading there, you may find it’s unreliable, broken, etc., so save yourself the journey & go elsewhere.