So your issue like many others is due to the connections between 4G and 5G not being at the same mast location.
By this I mean, the 5G signal covering your area is coming from a mast over at the Airport, but your local 4G mast which is closer is based outside The Cornishman Pub and isn't 5G enabled.
As mentioned above, I've been speaking to Vodafone's Head of Network Radio & Performance and he assure me they are working to bring features to eligible masts that will allow connection of 5G from other masts whilst using another 4G mast.
@JitteryPinger wrote:
UPDATE
This evening I have received an updated and confirmation that ENDC (intra-node) isn't yet activated automatically at sites, however there is development in progress to enable automation methods to identify and enable sites where 5G coverage is possible.
It has been added that "they will be shortly enabling a lot more sites manually so coverage for 5G should be usable by many more sites soon.
As for finding coverage, as mentioned the Airport is enabled 5G area, as is the Roundthorn Business Estate, area of Gatley and Heald Green.
If I've helped let me know 🙂
10 year's managing 9 Virgin Media accounts, and things never got any better, closed last 4 accounts since January 2021 :L
I give 'my' experience to help where possible.