The Alternative Investment Market (AIM) is a vehicle for public limited companies to sell its shares. The Alternative Investment Market (AIM) is less stringently regulated than The Stock Exchange, and deals in shares of smaller and growing companies.
The Alternative Investment Market (AIM) has no minimum capital requirements, no minimum number of shares required to be in public hands, ad no requirements for minimum trading record.
There can be special tax breaks for investors putting money into Alternative Investment Market (AIM) shares.