Martin fitted a new boiler and pipework for us about 7 years ago, (which wasn't the easiest of jobs with the mess that had been created before), and has serviced it every year since. He's even messaged to ask if i need the service when i've forgotten dates and not been in touch. Never had any problems with the system or the quality of his work and any questions i've had and asked or messaged him about have been answered without any air being sucked through his teeth! Everywhere is always left clean and tidy when he's finished and i have always found him to be totally trustworthy.