Costs on BDP’s contract to revamp MPs’ offices in Westminster are set to go up by half while the time it will take to complete the job has been extended by a couple of years.

The firm originally won the £25m Northern Estate Programme’s architectural and lead design contract, which was due to run for seven years, in November 2016.

But, according to a notice published by the House of Commons, the deal will now increase to between £30m and £37.5m and won’t be completed until December 2025.

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