Press Release

29 June 2011

LIDCO GROUP PLC

("LiDCO" or the "Company")

LiDCO signs LiDCOrapid monitor Registration and Supply Agreement for Japan with Argon Medical Devices Japan, K.K.

LiDCO Group Plc (AIM:LID), the UK-based hemodynamic monitoring company, today announces that it has signed an agreement with Argon Medical Devices, Japan, K.K. ("Argon Medical") to register with the Japanese Ministry of Health, Labour and Welfare the LiDCOrapid monitor and disposable kit for the Japanese market.

Argon Medical designs, manufactures and sells single-use specialty medical device disposables and in September 2010 acquired the critical care business of Becton, Dickinson ("BD").

Dr Terry O'Brien, CEO of LiDCO, commented:  "We are delighted to sign this agreement with Argon Medical and commence the regulatory approval process for the Japanese market.  Minimally invasive hemodynamic monitoring is becoming well established in Japan and the Board believes that the Japanese hemodynamic monitoring high risk surgery market has a potential market value of US$285 million per annum, with reimbursement available.  Through our partnership with Argon Medical Devices Japan, LiDCO will be well positioned to capitalize on this."

George Leondis, President of Argon Medical Devices, Inc added:  "We are very pleased to again collaborate with LiDCO. Our partnership on this groundbreaking technology is a significant step forward in the growth of Argon's Critical Care business in Japan."

- Ends -

For further information, please contact:

LiDCO Group Plc

Terry O'Brien (CEO)

Tel: +44 (0)20 7749 1500

Paul Clifford (Finance Director)

John Rowland (Company Secretary)                                        

www.lidco.com

FinnCap

Geoff Nash / Henrik Persson  

Stephen Norcross (broking)

Tel: +44 (0)20 7600 1658

www.finncap.com

Media enquiries:

Abchurch

Adam Michael / Joanne Shears /

Simone Elviss / Jamie Hooper

Tel: +44 (0) 20 7398 7728

simone.elviss@abchurch-group.com

www.abchurch-group.com

About LiDCO Group Plc

LiDCO is a supplier of minimally invasive hemodynamic equipment to hospitals, to monitor the amount of blood flowing around the body and ensure that vital organs are adequately oxygenated. LiDCO's products facilitate the application of hemodynamic optimization protocols for high risk patients in both critical care units and in the operating theatre.

Increasingly clinical studies are showing that the optimization of patients' hemodynamic status in high risk patients produces better outcomes and reduced hospital stay.  LiDCO's computer-based technology, developed at St Thomas' Hospital in London, has been shown to significantly reduce morbidity and complications, length of stay and overall costs associated with major surgery.

Key Products:

LiDCOplus: a computer-based platform monitor used in the Intensive Care Unit for real-time continuous display of hemodynamic parameters including cardiac output, oxygen delivery and fluid-volume responsiveness (PPV% and SVV%)

LiDCOrapid: a cardiac output monitor designed specifically for use in the operating theatre for fluid and drug management. The monitor enables anesthetists to get accurate and immediate feedback on the patient's fluid and hemodynamic status - a key measure of overall well-being before, during and after surgery.  The LiDCOrapid provides:

· 

early and rapid warning of hemodynamic change to aid choice of therapeutic route: fluid or drug

· 

quantification of hemodynamic response,

· 

guidance on effective delivery of fluids to ensure the right amount at the right time

LiDCOview: an easy-to-use graphical display of historical LiDCOplus and LiDCOrapid hemodynamic data.

All LiDCO monitors use single-patient disposables (sensors or smartcards) which provide an ongoing revenue stream. 

Clinical Validation & Education

LiDCO has been selected as the sole technology for two ongoing multi-centre government-funded studies in the UK and US. OPTIMISE is sponsored by the UK Government for optimizing cardiovascular management in high-risk abdominal surgery patients and in the US, MOnIToR is a US Government sponsored transplantation donor organ optimization study. The Company has also developed a hemodynamic workshop at St George's Hospital, London.

LiDCO Distribution Network:

LiDCO's strategy is to sell directly to hospitals in the UK, and through a network of specialty critical care and anesthesia distributors in the rest of the world.

LiDCO's sales office is in Cambridge, its manufacturing facility and headquarters are in London and its shares are traded on AIM. For more information please see www.lidco.com.

LiDCO Ltd Sales and Marketing, Unit M South Cambridge Business Park, Babraham Road, Sawston, Cambridge CB22 3JH, UK   

Telephone: +44 (0) 1223 830666  Fax: +44 (0) 1223 837241  VAT number 672 4757 08