Surveyors are conducting tests to determine whether the parliamentary estate contains crumbling concrete.
If detected, its presence would add to a growing list of problems facing the Houses of Parliament, including crumbling masonry, leaks and out-of-date electrical wiring.
Concerns have also been raised about the presence of asbestos and the “constant” fire risk in the Palace of Westminster.
Cabinet Office minister Jeremy Quin is leading cross-departmental work looking into the possible existence of reinforced autoclaved aerated concrete in other public buildings.
NHS bosses have ordered all English hospitals to verify that any dangerous concrete on their sites has been identified and that evacuation plans are in place.
Meanwhile, The Guardian says the cost of fixing effected school buildings is approaching £150m, and could rise far higher.
But there is no central register that sets out where the material has been used and Downing Street said there were no plans to publish a full list of public buildings that contain it.
