Sam Branson posted on instagram from the luxury retreat in the British Virgin Islands as he warned others in the path of the storm to find safe shelter.
Richard Branson was on the island and took everyone down into the wine cellar to sit out the storm as it destroyed the Great House above.
His son wrote: ‘Glad to say that all humans on Necker are ok although a lot of buildings destroyed 😞 Very concerned for our friends and everyone on the neighbouring islands and people in its path.
‘Please don’t take this hurricane lightly if it is heading your way. If your building is not very solid, do find somewhere safe! Homes can be rebuilt but lives can’t. Nature warning us again of the impact of #climatechange We must all do more to combat this.’
This morning Virgin issued a statement that said: ‘We are deeply saddened by the events that have taken place in the last 24 hours and our hearts and thoughts are with our friends and family in the Caribbean.
‘We are very grateful to be able to report that all of our team on Island have been accounted for as safe as well. Necker Island felt the effects of Hurricane Irma and sustained extensive damage, the extent of which we are still assessing.
Death toll continues to rise from Hurricane Irma as footage reveals devastation
‘We’d like to thank all of you for your thoughts and would like to assure you that we will be keeping you along, with our family and friends, updated this week as we know more.
‘We will do whatever we can to support and assist our local community through this extremely testing time.’
Sam Branson, who is not believed to be on Necker but is in the British Virgin Islands, posted this footage on instagram today.
He added: ‘Knowing our wonderful team as I do, I suspect there will be little wine left in the cellar when we all emerge.’
Earlier this week he revealed how he prepared for record-breaking Hurricane Irma as it heads towards his British Virgin Islands retreat of Necker Island.