Aukett Swanke saw first half revenues slump by a fifth, driven down by what the firm called ongoing stagnation in the UK construction market which showed “no clear-cut evidence of recovery”.

The only stock market-listed architect warned in April that it would sink further into the red, following losses posted last year.

Total revenue for the practice in the six months to the end of March 2018 fell 19% to £7.4m, while it posted a total loss of £1.2m, more than twice the deficit reported at the same point last year.

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