Speaking Clock is now known by BT as 'Timeline'
From most telephone lines in the UK it is 123.
The current BT cost (Jan 2012) is 32.05p inc vat from residential lines and 51.06 for business lines - See http://www.bt.com/pricing/current/Call_Charges_boo/0016_d0e19859.htm#0016-d0e19859
The old 1960's GPO Speaking Clock is still running on 01352 83 8081 and is charged as a normal 'geographic' number - free on many packages. 8081 was the code for the Speaking Clock in most areas outside London, Birmingham, Manchester, Liverpool, Glasgow and Edinburgh where its used to be 846 (or TIM on the old lettered dials)
123 is not available on Orange and one or two other mobile networks.
If you mean what number you used to dial before it changed to 123 - it was 8081
A clock face is also called a dial, face dial, clock face dial, or dial face.
A dial
There are 12 numbers on a dial of a clock. EXPLANATION : 1. The face of a clock that displays the hours and minutes of the day is called the dial.
Dial
A sundial is a type of clock
A clock usually has one face, known as the clock's dial.
Dial
Sony and Philips both make clock radios with an glow-in-the-dark analog dial.
A clock dial has 60 minute divisions on its face, and 12 hour divisions
The correct term is "DIAL".
An analogue clock is usually a device with a dial and two (or more) hands that show the time.