One big difference between the spreadsheet that appeared in May and the one from December was the inclusion of the data for "Exchange Only" lines: There were no such lines included in the original spreadsheet at all.
The new (pair of) spreadsheets includes data for Exchange-Only lines, in that it shows the postcode areas supplied that way.
However, every single EO postcode description shows *no* support for either FTTC or FTTP.
But, even though there is a column labelled "Exchange Only Flag", and this column takes values of "0" or "1", the header has a get-out clause saying "PLEASE NOTE: Postcodes which map to Exchange Only Lines are not shown in this report." Take your pick as to whether the data is reliable!