Airbag warning light

[Dweller]

Hi people,had a 75cdti for 6 months now and it's had an airbag warning
light on,which up until now just needed the wires under the passenger front
seat wiggling.
Now it's decided to stay on despite the wiggle technique so I figure whatever
was loose in the connecter has now come off.
Are there any recommendations of repairers that can sort this once
and for all.
I live in Leeds.(also newbie to this forum).👍👍👍👍