Your local news is available, but you will have to go to the alternate region channel numbers to get them.
You will find BBC East (Cambridge) on Channel 858 & ITV Anglia (West) on Channel 870.
When the cable networks were originally franchised & built, the government body in charge at the time (the Cable Authority) took no notice of region boundaries (particularly around the lucrative London area). As a result, a lot of customers well outside London are served by a London cable network "Headend". All customers in the same network area have to receive the same channels on the same numbers. The only way round it was a modification at local level to insert "extra" channels with the local varients in the 800 range.
Cable customer since 1993. Services: FH TV, Sky Sports & Movies (2xV+), Talk Unlim Telco, VIVID 100, Virgin PAYG Mobile