Hello and welcome to SayNoTo0870.com.

Putting "m14 6aa" "0161" into Google returns some results that might prove useful. I suggest that 0161 224 3314 should be tried first.

As I say, it's a case of trying it. Then report back on your findings so we can list a suitable alternative, or so we know that the suggested number is of no use. Also, please post the 084 number you have; this will allow us to list it in the database which will help other users.