This being the case . . when it comes to the Bill . . your lining their pockets! Big Company Rates on Drainage - £80 to £119 per HALF HOUR (with VAT added on at the end.) Big Company Rates on Plumbing - £84 to £135 per hour (with VAT added on at the end.) W.P.S IS DIFFERENT - WE ARE UPFRONT WITH NO HIDDEN SURPRISES. W.P.S Plumbing - £69 per hour - then it goes down to £34.50 per half hour - NO ADDED VAT AT THE END - Plus we will give you a 3 month warranty just fro peace of mind W.P.S Drainage - £70 per hour (including the use of a jetter - at no extra charge) - big company rates charge an additional £35 per half hour for the use of a jetter - and that's on top of their standard drainage rates! W.P.S Drainage do not.