Lancashire has reached a high proportion of the area with superfast speeds in phase 1, so there isn't much left to go.
There is a report from earlier in the year:
The numbers suggest that, out of 655k premises, 485k were down commercially, and 136k were reached (at superfast speeds) as part of phase 1 (another 10k at sub-superfast speeds).
That leaves 33k premises without superfast speeds.
Phase 2, SEP, is targeting to add 12k premises to the "superfast" total,, so about 35% of those remaining.
As we're getting into the back end of coverage, cases like yours will be cropping up - EO lines that can be re-parented into existing cabinets.
SFL also target a "step change" in speed, where they want to see premises getting below 15Mbps upgraded in preference to ones above that. If it only goes as far as "prefer", you might be included in SEP because BT think you are cheap enough; if SFL have gone as far as actively excluding your postcode, then you might not be lucky.