Yes 25Mbps download guarantee seems right too for the tier even on FTTP.
See these examples of the tiers and speed guarantees from BT for a property that can only get FTTP Full fibre (i.e only FTTP is present to the property and never had hybrid fibre (FTTC))
I've highlighted the one that matches the tier @KonchokZ would be on
How on earth are BT going to persuade folks to move to FTTP when they only guarantee half the headline speed on a non rate adaptive line. That is backside covering in extremis.
This is more like a soft forced migration to Openreach's FTTP full fibre infrastructure as this is within a Openreach copper stop sell area and a FTTP Priority area so would be on same bandwidth tier but obviously free installation.
At some point it will become a hard forced migration to FTTP.
There maybe other strategies and incentives BT are doing to proactively encourage customers onto the FTTP infrastructure before any of these soft and hard migrations come in.
Actually this is more like encouragement to people to leave BT and go to another provider and get full fibre, higher performance and lower cost.
Do you have access to an alternative provider, if you do , they obviously will install a completely new connection so it’s somewhat hypocritical to consider the upheaval of getting OR FTTP too much of an imposition yet have no issue from an Alt Net doing the same thing , and obviously if you don’t have an Alternative Network available and change to a different provider using Openreach it will be using OR FTTP, no reusing your copper pair connection