Just done a search on volume of people searching for the following terms:
Wedding DJ North East
Wedding DJ Darlington
Wedding DJ Durham
Wedding DJ Newcastle
Wedding DJ Teesside
Wedding DJ North Yorkshire
Wedding Disco North East
Wedding Disco Darlington
Wedding Disco Durham
Wedding Disco Newcastle
Wedding Disco Teesside
Wedding Disco North Yorkshire
Disco North East
Disco Darlington
Disco Durham
Disco Newcastle
Disco Teesside
Disco North Yorkshire
Mobile Disco North East
Mobile Disco Darlington
Mobile Disco Durham
Mobile Disco Newcastle
Mobile Disco Teesside
Mobile Disco North Yorkshire
Mobile DJ North East
Mobile DJ Darlington
Mobile DJ Durham
Mobile DJ Newcastle
Mobile DJ Teesside
Mobile DJ North Yorkshire
Here's the top results (number of people searching per month)
Attachment 18719
These are the terms that you show up for in the top 20
Attachment 18720
So it suggests to me that you don't come up on the first page when searching for a term including 'wedding dj' so that's possibly why you're not getting enquiries from people searching for a 'wedding dj'.