I wrote a review for JBC some years ago, when they modernized my kitchen and quarry-tiled the ground floor of my 2 bedroom ex-council house.
Starting in December 2011, the firm did much more extensive work, building a back extension to my house, and thus creating a lounge and a utility room/toilet. Jim McCaig guided me through the planning permission/building warrant process, and then went on to do a first class job. The project was completed to a very high standard (way above what I thought I would get) within budget and on time. If you want an intellegent, efficient and reasonably priced builder, then go to JBC. If you want a cowboy, then look elsewhere! I have no hesitation in recommending JBC for projects great and small.