- Construction materials group SigmaRoc swung to an annual profit after acquisitions helped boost revenue.

Pre-tax profit amounted to £2.6m, compared to a £2.4m loss in the previous corresponding period, as revenue grew to £27.1m.

'I am pleased to report a strong year in 2017 where we were able to exceed our expectations and build a solid platform from which to continue to deliver on our growth strategy,' executive chairman David Barrett said.

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