Many thanks Konstantinos of DMK for a great job. Provided diagnostic and options for repair of the very old boiler. We concluded that it was better, safer and better value in the long run to replace for a new boiler. Good choice.
From start to finish, great customer care. Boiler options well explained, price and layout agreed, and executed to great quality, on time, and at agreed price. Very happy to have a new, efficient boiler, especially as gas prices have increased!
I'll certainly be using DMK again.
Many thanks, Martin