In 1980 Roger began writing about non-ferrous metals (including copper, cobalt and cadmium) for Metal Bulletin. In 1983, he joined Commodities Research Unit (CRU), as a consultant in the copper team. His career at CRU also included writing for Fertilizer Week. After he joined SteelScreen, a B2B venture capital funded steel trading exchange, Roger - with others - established Steel Business Briefing (SBB) in 2001. As SBB's managing editor, he oversaw all of the company’s publications. SBB was sold in 2011 and since then Roger has enjoyed his retirement: he continues, however, to spearhead the Kallanish Blog, and is a proud member of the Kallanish faculty, as well as writing a weekly column on the global steel markets under the name of Kestrelman.

Patrick was born in Scotland and completed his early education in Edinburgh and Aberdeen. Having been involved in international industry and business since 1986, Patrick initially worked with British Steel PLC (later Corus and Tata) based in Europe, Asia and America. Subsequent to British Steel he completed an MBA at Cranfield School of Management and then, after various consulting and dot com roles, he co-founded SBB in 2001. He led, managed and developed SBB for 10 years. During that time the company evolved into The SBB Group, consisting of Steel Business Briefing, The Steel Index and Gas Business Briefing. Patrick then led the negotiations for the sale of the group to McGraw Hill in July 2011. He has extensive experience in China and speaks both Chinese and French. He is now trying to follow the quiet life in Scotland, though he cannot help following the global steel and iron prices on a daily basis! Patrick, and his wife Linda, have 3 dogs (Hamlet, Tubs and Maginus), chickens, ducks, quail and guinea fowl.