0870 numbers are non-geographic numbers known as national NTS numbers.
Your inbound callers pay similar to a national rate call charge from anywhere in the UK when dialling your 0870 number.
Calls to an 0870 number from a standard BT landline line will cost the caller (including VAT):
** BT include free calling to 0870 in many packages.
0870 numbers are subject to regulation by the PSA (Phone-paid Services Authority
). IF the service you provide is subject to certain special conditions
then you will need to register with the PSA (a regular business sales and enquiry line would not need to register).
Other choices are