Possibly related, just found this on the Satcure monthly newsletter (a most excellent publication):
Do you live on the south coast?

About 5,000 households in the Meridian TV region have had problems with losing channels after re-tuning their televisions as part of the digital switchover.

People with digital equipment, such as Freeview boxes, in Hampshire, the Isle of Wight, east Dorset and West Sussex had to re-tune on Wednesday when Rowridge transmissions were changed to different UHF channels.

http://news.bbc.co.uk/1/hi/england/7965639.stm

The Meridian TV region is set to switch to digital in 2012 but, as part of the preparations for switchover, a reorganisation of the channels happened on Wednesday 25 March 2009 ahead of the official date. Multiplexes changed UHF channel as follows:-

BBC Mux 34
ITV/4 Mux 32
Mux A 30
Mux B 28
Mux C 37
Mux D 33
More here: http://www.digitaluk.co.uk/when_do_i_switch/meridian/rowridge