He wasn't trying to sell me anything, but he did say he found the Baxi
Potterton combi (non-condensing) with hot water reservoir was very
reliable.

Anyone who wishes to install a Poxi Batterton clearly knows nothing about
modern technology.

The problem was that they used to make good boilers. Then a few years ago,
they stopped. All these conservative plumbers tried their useless condensing
models and thought that condensing meant bad, when it just meant that their
chosen manufacturer was unable to produce a reasonable model.

Christian.