Roofing Services Diamond building solutions are known to be the best roofing contractors in London. We have been in the construction business for decades. There are a large number of beautiful construction contracts that have been successfully completed by us in the UK. Our expertise is not only limited to roofing, we have experts that can construct flat roofs, do block paving, install the best guttering system in your home, design patios, and all the construction services that are possible.