It is thought there will also be a large wine cellar, an art storage room, gym facilities and male and female changing rooms at the house owned by David Graham, a Canadian who according to reports made hundreds of millions of pounds when he sold his cable television business.
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A post-mortem report found no traces of drugs or alcohol, and the evidence suggests Simon Brown was not taking photos.
The masked men used an angle grinder to tear through the lock.
Doing as little as possible in the first minute helps people regain control of breathing and increases chances of survival, says the RNLI.