I highly recommend Shahzad Muhammad. He did a Landlord Gas Safety check and also speedily diagnosed an ongoing problem with the heating. My property manager said it was the most thorough gas check she's ever seen a gas engineer undertake! Mr Muhammad ordered the replacement part needed the same day and returned to fit it 48 hours later. Very efficient, very professional, very reasonable pricing, great communication. An all round excellent service. I'll definitely be booking his services in future.