If you take service from someone using a different network operator to your Talk Talk service , then a new installation from that network will be required, that may , depending on how your current service is provided, require excavation from the footpath to your property .
As stated , the UPRN quoted doesn’t have Gfast available, which suggests you are on regular FTTC (fibre to the cabinet) with Talk Talk , the maximum speed being 80Mb , you presumably are quite close to the cabinet so may well get that , but not 100Mb , if TT sold you Gfast (TT150 ) you may have been misled
Edited by Iniltous (Wed 30-Apr-25 14:35:33)