We spent the winter in Emsworth marina. A really nice, friendly, family run marina. The village and reasonable shops are a few minutes walk away and Havant or Chichester a short bus ride away.
The marina is entered over a sill and is fairly shallow inside. They did find us a deep enough berth and I think there are several more for deeper draft yachts.
There are several businesses in the marina serving yachts and everything you need is within a few miles.
The village has a good community centre catering for lots of activities at reasonable prices. I took up table tennis again after a 30 year rest and thoroughly enjoyed my evenings play which cost the princely sum of £2.00
Would recommend a visit or berthing there for the winter to everyone.
Check out their site at http://www.emsworth-marina.co.uk/