The supply chain in the United Kingdom is under pressure from a combination of high demand for materials caused by the booming housing market and disruption caused by Brexit and the pandemic.  Sawn timber prices have risen by an average of 20 per cent, while some roofing products are unavailable until August, according to members of UK's Builders Merchants Federation (BMF).  The trade body, which represents 760 merchant and suppliers companies in Britain, said that high demand, escalating prices for shipping and delays at some British ports were all having a “major impact” on the ...