Good place for undersealing - Warks / W.Mids / Cotswolds

[havoc]

Getting a grey import, and want to refresh the underseal on it...but haven't a clue where to go to get it done.

Is it something any bodyshop could do, would I be better going somewhere else???

(Yes, possibly could do it myself, but have neither ramps, time (8mth old baby at home) nor interest.)