Very early days yet. Many areas that aren't in phase 1 or 2 that you would have thought would have been no-brainer areas.
I would imagine all major urban areas will be covered by FTTC or even FTTP though in time.
The Wythenshawe exchange itself is actually not exceptionally large, and is low business density!
SamKnows Broadband - Availability - Wythenshawe (MRWYT) Exchange
There's no way the hospital would use the consumer-grade FTTC/P services they'll have leased connectivity to NHSNet.
These businesses are hardly going to be running on cable modems, so it's probably a fair bet that the business situation wasn't a major consideration. Small branch offices, SMEs, etc, will be the target of the NGA products. Larger companies may get a line in for backup but will still have the SLA'd leased circuits.