An update.
I have the HDD system so, my options are to revert to Waze or, get wholesale ripped off by buying an update from HERE Navigation (not in UK) which comes as a USB stick for £169 + £11.50 delivery which is the latest (and last!) update available and it's dated 2020 so, three years out of date.
No fussed if this makes me a bad person but, that is an absolute mugging and very poor so, have raised with Jaguar CS.
I have a cupholder mobile phone holder should I not be able to get a reasonably recent Sat-Nav update, I'll simply use Waze; which is updated daily with live incidents and warnings like parked car, debris in the road, potholes, works perfectly every time and it's free!
I will see what CS come back with but, confidence that Jaguar are able to support a customer in such an instance is very, very low.