Thanks everyone.
Looks like a trip to the attic to find the old analogue phones and re enter all the numbers. Too bad for any number that we have added since!
Thanks again. I will probably be back on again to understand how to download off the hub.
Or better still, plug the analogue phone into the socket of the Smart Hub 2, even if they have a base station. They will work just as before, and would save you the hassle of re-entering the numbers again, as they are stored on the phones.
Are the same numbers in your mobile?
As far the hub goes, the home page of the hub manager should show a tile with your phone no on it. Click on that and then “Contacts”. Rest is obvious from there.