A minor gas leak was detected while installing new oven in SW12. It was a Sunday, so hard to find gas plumbers. South Star Plumbers said they could attend, but we had to agree to the pre-emailed charges ( 60 quid callout + 295 quid per half hour plus VAT). At these prices, you expect an expert plumber who will do fast work. The bill was for 3 hours work, totalling 1,226 quid. This included a 72 quid charge for a testing knob. Outrageous! We had no choice but to pay the bill before the plumber left. I’ve subsequently written to head office to request a part refund. They responded, only to justify their time and the charge. They won't respond to any further emails. Highway robbery.