From El Reg:
Openreach offers duct-off providers 'OSA Filter' instead of Dark Fibre AccessOpenreach has today offered its communication providers an alternative to the Ofcom-proposed Dark Fibre Access (DFA) product, which a court ruling slapped down three months ago.
....
The firm said it has since been viewing providers' Very High Bandwidth (VHB) connectivity requirements and has proposed the Optical Spectrum Access (OSA) product for ISPs, the OSA Filter Connect, to "meet industry needs".
If you have access there is OR data
HERE.