0844 revenue sharing numbers were introduced last year and are rapidly replacing 0870 numbers which no longer attract an out payment to the “owner” (you). The 0844 out payment to you depends on the volume of calls you receive.
From a BT land line the cost to the caller is around 5p a minute to a 0844 number.
As a non geographic number, they, like all numbers starting 08, can be redirected when required and stay with you for ever as you move.
There is no connection charge although there is a small monthly rental fee on low call volumes less than 500 minutes.
We can usually connect a number is 5 minutes.