Board Changes

20 May 2019

Rosslyn Data Technologies plc

("RDT" the "Company")

Board Changes

Rosslyn Data Technologies plc (AIM: RDT), a leading global big data technology company, is delighted to announce that Ginny Warr will be joining the board of RDT as a non-executive director with effect from today.

Ginny is currently Head of Procurement at The British Land Company PLC. She is a seasoned Chief Procurement Officer bringing over 30 years' experience in both public and private sector roles. Prior to joining British Land, Ginny was instrumental in Vodafone's global expansion programme having specific responsibility for procurement transformation and alignment across Europe and Africa.

On 30 June 2019, John O'Hara will stand down as a non-executive director of RDT. John joined the board in 2010 as a non-exec before becoming Chairman in August 2013 and as Chairman led the Company through the IPO that year. In October 2018 he stepped down as Chairman but remained on the board to facilitate the transition to his successor.

Rosslyn Chairman, James Appleby said;

"I am delighted to welcome Ginny to the board; she brings substantial experience in assisting transformational, growth businesses. Her knowledge of best practice in procurement will be a significant benefit to the Company.

I would like to thank John for his work over the last five years; John brought me on to the board as his successor and has been tremendously supportive in enabling a smooth transition. I wish him the very best in his future endeavours."

Pursuant to Schedule 2 (g) of the AIM Rules for Companies, Virginia Warr (aged 55) has held the following directorships or partnerships in the past five years:

Ms Warr does not currently hold any shares in the Company.

There is no further information required to be disclosed in respect of the above appointment pursuant to Rule 17 and Schedule 2 (g) of the AIM Rules for Companies.

Notes to Editors

Rosslyn Data Technologies plc, (AIM: RDT) is a leading provider of a cloud-based big-data analytics platform. The company provides analytical services by combining four key technologies: bulk data extraction; cleansing; enrichment; and visualisation, through a single cloud platform enabling users with detailed data to make more informed decisions. Rosslyn's RAPid platform is the Group's primary product available to its multinational customers.

Further information can also be found on the Company's website at: www.rosslyndatatech.com