Marcus, the assigned gas engineer, informed me in all detail about the issues with my boiler and fireplace. He promptly replied to my questions but, most importantly, he put on the table all available options along with his professional recommendation towards resolution. He arranged the job in a timely manner and according to our agreed schedule. I appreciated also the regular status updates as the work was ongoing and the confirmation upon completion. Excellent service, very professional approach, with a quality end result in mind. Highly recommended!