Chimney Survey (to find a new drip)

Hello - anyone used/know of a competent person/firm to survey a chimney in the Cheshire/Shropshire/Staffs area?

We need a cctv internal and external to find where our new drip is coming from.

I’ve found a firm based in Hereford but they want £595+vat for the survey which seems steep to me.

Thanks
Phil