Lee and his colleagues have been out to us twice and we've found them to be really helpful and friendly on both occasions. In both instances they've saved us money - first of all by trying a quick (and cheap) fix on a leaking valve, and when it didn't work, suggesting we combine having it replaced with the bigger job we'd mentioned of switching our bathroom radiator for a heated towel rail. This meant we only needed to have the system drained and refilled once, which saved us both time and money. We sourced the towel rail ourselves, but Lee was very helpful when we had questions about the spec/measurements etc, and always responded to texts in a timely fashion.
They did a thorough and professional job while they were here, and made sure I was fully consulted on the appearance of the new pipework etc before they started. They also gave us some helpful advice about our heating system and how to manage a couple of its little "quirks", without resorting to replacing the whole thing (not just yet anyway!)
All in all, would thoroughly recommend and will be calling again for any future issues