Billington Holdings was formerly known as AMCO Corporation. It has a structural steel business that includes structural steel products, arches for underground mining and safety solutions for people working at height. Billington also owns Dosco, which supplies mine tunnelling equipment. Billington has been quoted on Aim since 29 September 1995, when it transferred from the rule 4.2 trading facility that was being ended by the London Stock Exchange. The introduction price was 93.5p. On 1 September 1999, Billington demerged construction company Tolent, which was introduced to Aim at 30p a share.