Being one of the first areas of the country where the analogue transmitters are being turned off, I thought I'd post an issue I had (that's now fixed) with BBC channel locks, just in case anyone else has a similar experience during the switchover.
Our transmitter (Caldbeck) was turned off yesterday. There were Digital switch over people and banners etc all over the town centre stating if you had freeview you'd have to re-scan during each phase of the switchover (believe they're doing it in 3 steps).
I noticed last night that I wasn't getting a channel lock on BBC1, 2, 3, BBC News and BBC Parliament.
A full re scan and channel update did nothing to change this.
Pc reboot had no effect either.
I decided then to delete all my channels and do a full rescan.
After doing the scan I noticed the channels listed above were not picked up. After many re-scans, I decided to delete the the Video Source and create a new one, assign it to the tv card in Input Connections and do a full scan again. That has now given me all channels with full lock.
You'll also need to then sort out your channels with whatever method you usually do, but I'm not here to tell you that, there's plenty of other threads out there with that information. I will point out though to make sure you select "Sort Mode: Channel Number" in the Channel Editor. I missed it during the above instruction and was going nuts trying to figure out what I'd missed.
Hope this is of some help.