DIGITAL UK estimates that there are approximately 123,000 analogue TVs in Lewisham and Greenwich.

In just under a year analogue TV will cease broadcasting from the Crystal Palace transmitter which has covered the area for 75 years.

By April 4 next year, everyone who is still watching analogue television must convert their sets to digital in time for the historic switchover.

Digital UK, the body leading the process, estimates there are around 123,000 analogue televisions still being watched in the area.

Old televisions do not need to be thrown away, as almost any model can be converted with a digital box.

Digital switchover will happen across the whole London TV region, affecting nearly 12 million viewers in total and extending Freeview coverage to almost every home for the first time.

Analogue BBC Two will disappear for readers of the Lewisham & Greenwich News Shopper on 4 April 2012.

The remaining analogue channels – BBC One, ITV1, Channel Four and Channel Five – will then be turned off on 18 April 2012.

The change takes place around three months before the London Olympics, and will give viewers a choice of ways to enjoy widescreen, interactive digital coverage of the Games.

London Manager for Digital UK, Vivien Morgan said: “Switchover is making television history – the biggest change in broadcasting since colour TV. It’s exciting news for all of us as it means more channels, better pictures and easier recording.”

One third of UK homes have so far completed the switchover process, while nine-in-ten households are watching some form of digital TV on at least one set.

Viewers can follow the switchover at and twitter @LondonTVswitch.