AIM Rule 26

Country of incorporation, main country of operation:

The Company was incorporated and registered in England and Wales on 2 March 2007 under the Companies Act 1985 (as amended by the Companies Act 2006 or otherwise) as a private company limited by shares with the name Pressure Technologies Limited and with registration number 06135104. On 23 May 2007 the Company passed a special resolution pursuant to Section 43(2) Companies Act 1985 to re-register as a public company.

The Company's registered office and principal place of business is at Meadowhall Road, Sheffield, South Yorkshire S9 1BT.

The Company has the following wholly owned UK incorporated subsidiaries:

Chesterfield Special Cylinders Limited (company number 4869273) whose registered office is at Meadowhall Road, Sheffield S9 1BT
Chesterfield Pressure Systems Group Limited (company number 4753732) whose registered office is at Meadowhall Road, Sheffield S9 1BT
Chesterfield Cylinders Limited (company number 6441359) whose registered office is at Meadowhall Road, Sheffield S9 1BT
Chesterfield BioGas Limited (company number 6649410) whose registered office is at Meadowhall Road, Sheffield S9 1BT
Chesterfield Tube Company Limited (company number 5242094) whose registered office is at Meadowhall Road, Sheffield S9 1BT
Al-Met Limited (company number 1897307) whose registered office is at Meadowhall Road, Sheffield, S9 1BT

Constitutional documents

Articles of Association

AIM Securities (total in issue, percentage not in public hands), significant shareholders:

Authorised share capital	Number	�
Ordinary shares of 5p each	15,000,000	750,000
Allotted and fully paid-up shares	Number	�
Ordinary shares of 5p each (listed in AIM)	11,333,620	566,681

Directors shareholdings	Number	% of issued share capital
J.T.S. Hayward	1,000,040	8.82%
R.L. Shacklady*	60,500	0.53%
N.F. Luckett**	52,000	0.46%
P.S. Cammerman	24,395	0.22%
T.J. Lister	3,750	0.03%

* - Includes 22,500 shares held by his spouse
** - Includes 7,667 shares held by his spouse

Significant shareholdings as at 31 August 2010

The following significant holdings have been declared:

J.T.S. Hayward	1,000,040	8.82%
Artemis	921,667	8.13%
AXA Framlington	875,333	7.72%
J.W. Brown	620,000	5.47%
Hargreave Hale	606,667	5.35%
P.D. Catton	588,333	5.19%
A. Harding	588,333	5.19%
G.Edwards	520,000	4.59%
Unicorn	469,767	4.14%
P.L. Redfern	345,000	3.04%
South Yorkshire Investment Capital Fund	342,224	3.02%
Liontrust Intellectual Capital Trust	341,553	3.01%

Number of shares not in public hands

The number of shares not in public hands at 26 August 2010 was 3,282,351 representing 28.96% of the issued share capital at that date.

Share Option

On the 30 Novemeber 2007, the Directors granted options on 59,197 ordinary shares at 176p in accordance with the rules of the Pressure Technologies plc SAYE Share Option Scheme. On 18 August 2009, a further 29,015 options were granted at an option price of 150p.

On 7 October 2009, options were granted over 116,127 ordinary shares under the rules of the Pressure Technologies plc Performance Share Plan � Enterprise Management Plan at an exercise price of 232.5p. These options are exercisable between 3 and 5 years following the date of grant.

The Directors� interests in share options are as follows: