Demon, once the largest UK ISP is up for sale by owners Thus.

Founded in 1992 Demon was acquired by the Scottish telecom in 1998 for £6.66 million (a unique number for Demon!) but has suffered in the broadband boom and saw it's profits fall 15 percent last year. It's home broadband business boasts 50,000 users which contrasts to the 180,000 subscribers when bought by Thus, but still managed a profit of £27.7 million.

Analysts put a valuation of £15m to £20m on Demon's domestic business, as Thus plans to retain the small and medium sized business customer base. It's Dutch counterpart, Demon Netherlands, was sold to KPN earlier this year for £47m.