Paul - where did you get that info from?
I used my Fibre Checker Application, that retrieves information from online sources and uses the BT DSL Checker for the speed and to confirm some of the info got from other the places.
As for knowing that your EO line will be moved to cabinet 20 that's simple.
It says your postcode is covered by cabinet 1 (6%), and cabinet 20 (93%) and EO Lines (93%)
See that 93% are still EO Lines along with 93% for cabinet 20, that is saying that the remaining 93% of the EO Lines are moving over to cabinet 20.