An application to build an underground tunnel under the garden of a £5m mansion in Wimbledon Village has been approved.
The plans feature an underground gym, cinema, games room, sauna and adjoining glass tunnel leading to a proposed pavilion swimming pool.
Concerns were raised by the Parkside Residents Association that the continued popularity of basement conversions could impact the neighbouring homes - some of which are more than 100 year old - and called on the council to ensure "robust supervision".
Despite this councillors approved the application at a planning meeting on Thursday, November 7.
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