The South East is experiencing strong winds and heavy rain for the second time this weekend.
Oliver Tully says the closure will have "enormous consequences" for his 88-year-old father.
Sussex Police are investigating the collision on the Lewes Road (A22) in East Grinstead.
South East Water says supplies are returning to customers in the Benenden area.
A spokesperson said the expanded group will bring together expertise to strengthen services.
Head teachers say funding is "no longer sustainable" to meet the costs of operating in West Sussex.
Hospital staff did not administer drugs to Tom Parsons because of safety fears, the court hears.
Car parks in East Grinstead, Burgess Hill and Haywards Heath are now free from 18:00.
Vinyl-lovers across the South East are among those enjoying Record Store Day at independent shops.
