Ptolemy Dean Architects has won planning permission to add two extensions to a 19^th-century cricket pavilion in one of central London’s most exclusive residential squares.

It created the plans for Westminster School, which has its sports ground at the centre of Vincent Square in Pimlico, half a mile from the Houses of Parliament, and which counts a host of celebrities and politicians among its former pupils.

The practice also recently completed Weston Tower, the first architectural addition to nearby Westminster Abbey for more than 270 years.

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