The United Kingdom has a very complicated phone number system. The significance of the number 0845 in the UK represents a non geographical number and is the cheapest.
The numbers starting with 0845 in the United Kingdom are not associated with any specific location. The 0845 in the United Kingdom can actually be the area code of anyone in the region.
In the United Kingdom, telephone numbers beginning with 0845 are considered non-geographic, ie they are not associated with a specific geographic area. As such, the rate charged when calling such a number can vary but is often greater than that when calling a local number.
The most likely answer is simply that the phone companies are "greedy", but it could be claimed that '0845' numbers are worth more. '0845' numbers are so called non-geographic numbers, which means the caller doesn't have to dial an area code. Aside from saving a few seconds for the caller, it also ads value to any company using such a number as their official telephone number. Having an area code would make the number harder to remember for potential customers and would send a bad message as well (i.e. "we can't afford a nation wide number and we don't offer our products nationwide"). Therefore it might make sense for the phone company to charge extra for these numbers.
There are no area codes starting 92595. All UK area codes start with a zero. Codes starting 09 are usually 'special' numbers - such as premium rate numbers.
Nowhere ! UK numbers starting with 0161 are for the MANCHESTER area !
There is no city in the UK starting with area code 791. All 'area' codes starting with 7 are mobile (cell) phone numbers.
No-where - UK numbers starting with 07 are mobile (cell) phone numbers.
In the UK, this is a non-geographic number. Most usually these numbers are used by call centres. The correct written format is 0845 - 0xx - xxxx.
France does not have area codes - they have ten digit phone numbers that are dialled in full. Numbers starting '02' are normally in north west France.
Numbers starting 01 in the United Kingdom are regular geographic numbers. However, 016 is not an area code in itself. There are many codes starting 016 of various lengths from 0161 Manchester to 016977 Brampton.
Nowhere - UK numbers starting with 070 are personal "follow-me" numbers, which can be forwarded to almost anywhere in the world.
That's not an area code as such... all UK numbers starting with 07 are mobile (cell) phone numbers. The leading zero is omitted when dialing into the UK from abroad.
According to the BT website - the code 0208 or 02089 doesn't exist. Numbers starting 020 usually apply to somewhere in London - however, there are no numbers starting 0208 or 02089 !