Yay! There has been contact from the kitchen installation manager. In fact an email and a phone call this evening after another call to the office. We even have a date pencilled in. Bizarrely it's the day before the decorator's are also due to return. So we could, just could, have this phase of works completed by end-November. That'll be nearly five months for work that was expected to take between 3 and 6 weeks!
When this has happened, although there is still more to do, we will be cracking open a bottle of fizz!