Trading Update

Costain Group PLC

("Costain" or "the Group")

Trading update

London: 30 June 2016

Costain, the engineering solutions provider, today issues a trading update ahead of its results for the six months ended 30 June 2016 which will be announced on 24 August 2016.

Trading

Trading during the first half has been strong and the Group is on course to deliver a result for the year in line with the Board's expectations.

The Group has maintained its record order book which, at £3.9 billion, is also over 5% higher than the £3.7 billion recorded at 30 June 2015. Repeat orders continue to represent more than 90% of the order book, reflecting the strength of Costain's long term relationships with its customers.

The Group also has a preferred bidder position of over £400 million and tendering levels remain high.

The Group's unique and focused 'Engineering Tomorrow' strategy has successfully positioned the business to provide the range of innovative integrated services demanded by its major customers who are spending billions of pounds on projects, underpinned by legislation and regulation in the UK, upgrading and renewing the country's energy, water and transportation infrastructures.

Interim Results

Costain will announce interim results for the six months ended 30 June 2016 on Wednesday 24 August 2016. There will be a presentation to analysts at 11 am that morning at the offices of Instinctif Partners, 65 Gresham Street, London EC2V 7NQ.

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