The Company's issued share capital, as of 30 September, 2019 consists of 49,957,876 ordinary shares with a nominal value of 12 pence each with no shares held in treasury. The percentage of of AIM securities which are in issue that are not in public hands is 61.7%.

A list of percentage holdings of significant shareholders above 3% are set out below.

Name No.of Ordinary Shares held (%)
Patrick DeSouza 5,426,164(10.86%)
Todd Carter 2,963,021 (5.93%)
Scott Schlichter 5,870,406 (11.75%)
Taro Koki 3,601,437 (7.21%)
Canaccord Genuity 4,736,110 (9.48%)
Gresham House Asset Management 6,666,666 (13.34%)
Rathbone Investment Management 1,732,540 (3.47%)
Water Intelligence plc 3,981,009 (7.97%)
Sumitomo Corporation 2,314,815 (4.63%)