Outstanding. Very knowledgeable, personable, happy to be client-led but with plenty of ideas too. The guys on site are friendly, courteous and respectful as well as efficient and clearly masters of their skills. Really can't praise them highly enough. So happy we chose NK and really happy with the final result. Everything either as promised or better. They told us that they would go in through the roof and wouldn't disrupt the house too much and on that one, seeing is believing. To have our loft converted into two bedrooms and a bathroom with all the work achieved by going in through the roof is really quite something - they delivered and then some. Quality of workmanship excellent too. All the other reviews are true - I can't see why anyone would choose anyone other than NK!