Block Listing Application

Gooch & Housego PLC

("G&H" or the "Company")

Block Listing Application

Gooch & Housego PLC, the specialist manufacturer of optical components and systems, announces that an application has been made to the London Stock Exchange for a block listing application of 97,658 ordinary shares of 20p each in the Company (the "Ordinary Shares") pursuant to the Gooch & Housego Long Term Incentive Plan 2013.

Upon exercise, the Ordinary Shares will be issued credited as fully paid and will rank pari passu in all respects with the Company's existing ordinary shares in issue.

It is expected that admission will become effective on 3 January 2019.

For further information please contact:

Gooch & Housego PLC

Mark Webster/ Andy Boteler Tel 01460 256440

Buchanan

Mark Court/Sophie Cowles Tel 0207 466 5000

Investec Bank plc, (NOMAD and Broker)

Patrick Robb / David Anderson Tel 0207 597 5970

Notes to editors

1. Gooch & Housego is a photonics technology business headquartered in Ilminster, Somerset, UK with operations in the USA and Europe. A world leader in its field, the company researches, designs, engineers and manufactures advanced photonic systems, components and instrumentation for applications in the Aerospace & Defence, Industrial, Life Sciences and Scientific Research sectors. World leading design, development and manufacturing expertise is offered across a broad range of complementary technologies.

2. All financial information included in this announcement is sourced from unaudited management accounts and excludes any specific items. This announcement contains certain forward-looking statements that are based on management's current expectations or beliefs as well as assumptions about future events. These are subject to risk factors associated with, amongst other things, the economic and business circumstances occurring from time to time in the countries and sectors in which G&H operates. It is believed that the expectations reflected in these statements are reasonable but they may be affected by a wide range of variables which could cause actual results, and G&H's plans and objectives, to differ materially from those currently anticipated or implied in the forward-looking statements. Investors should not place undue reliance on any such statements. Nothing in this announcement should be construed as a profit forecast.