Range: 020 London (dmClub numbers have 020-7060 prefix)

Cost to call: 'Not much' from BT landlines (it depends on what price plans the caller is on). When calling from UK mobiles it's usually taken from inclusive minutes.

Image: Indicates a Central London location (although technically, the 020 range could indicate anywhere in the London area)

Cost of ownership: The owner pays setup and regular rental fees. Call fees will apply on top, but may be very low for UK landline or VOIP termination.
dmClub 020-7 numbers cost between 1.0 and 1.25 {GLOS:ppm} to divert to UK landlines. Fowarding to VOIP is done without charge resulting in a fixed cost service

International accessibility: Perfect.

Regulatory issues: No special issues.

Mobile accessibility: Very good. Pricing of calls from mobiles to UK geographic numbers are one of the big attractions of the range.

Typical Applications: As a main 'switchboard number' for companies based in London (or with a notional 'London office'). Geographic numbers are very much in vogue these days, with public suspicion over misuse of the 08 number ranges.
With calls from mobiles being mostly without charge, geographic numbers (particularly Gold ones) are arguably 'the new 0800!'

Choose a gold number to add to the professional feel for a fairly modest additional one-off cost. A gold 020 number is widely regarded as a highly prestigious address

A Fax Number, perhaps the next number along, to maintain consistency on your business card/notepaper.

0800 numbers may be more appropriate if you're fighting for business as they're cheaper and may reflect a business with nationwide aspirations

UK Local numbers may be more appropriate if you serve a more local community

This information is intended to be generally relevant to 020-7 numbers from whoever they are purchased. Highlighted points are specific to dmClub.