Investors were already expecting Aim companies not to comply with new London Stock Exchange rules, due to come in force on 20 August, requiring key financial information be put on a website. But research from net design consultancy Investis has found that only six of the constituent FTSE AIM 100 companies are fully compliant with the regulations only four weeks before their introduction.

Al Loehnis, Investis director, says: ‘In particular, there is a lack of information surrounding who owns the securities, the percentage of shares in public hands and significant shareholders.’ He adds that the presentation aspect of the rules – that all information should be in one place and easy to find – is being ignored.