Investors may be interested in checking out the small Irish company, SupaRule, which will list on Dublin's Development Capital Market and London's AIM market this month.

The Limerick company manufactures patented technologies, many of which are used by the likes of BT, ESB and British Rail. Its stockbrokers Dolmen points out that at present the group does not face any competition for its products and is expected to have the potential to grow its market share on a long-term basis. However, companies listed on these markets tend to be relatively high risk.