intercity125 wrote on Jul 16
th, 2007 at 3:45pm:
I found some old paperwork from a bank and british gas.
Numbers were 0345 and 0645. Were these charged like 0845 and when did the numbers change to 0845?
Yes.
0345 was migrated to 08457 and 0645 to 08459. So 0345 123456 is now 0845 7123456 and 0645 123456 is now 0845 9123456
0345 was BT's 'local rate' code. 0645 was introduced as Mercury's equivalent. Mercury is now Cable & Wireless.
Today, different 0845 numbers are allocated to loads of different providers and not just BT and C&W.
Quote:Also, why were there 05 freephone numbers?
Same reason as 0645 existed alongside 0345. 0500 is C&W (formally Mercury) and all numbers are 10 digits long, ie 0500 123456.
0800 was originally BT only, and was also only 10 digits, ie 0800 123456. There are no new 0500 numbers, but new 11 digit 0800s are being allocated, which is why you see some 10 and some 11. 0500 numbers have never been moved from there, probably because 0500 is a memorable prefix.
Quote:Were there ever any 04 numbers?
Not that I'm aware of. 04xx numbers only ever existed before Phoneday which was in 1995. Details on both Phoneday and The Big Number of April 2000 are on Ofcom's website
here.