Graig Shipping celebrated its centenary with dinner and dancing in Cardiff.

About 250 guests joined chief executive Hugh Williams and his brother Chris, Graig's commercial director, at the Exchange Hotel, on the site where Welsh coal was traded for export until the 1970s.

There were once more than 200 shipping companies listed on the Coal and Shipping Exchange in Cardiff Docks, amid a boom in exports of high-quality coal from the Welsh valleys that began in late 1918.