Aside from roving funfairs which can pop up in towns and cities for a week before travelling on and are a great bonus if you find one, the UK has many, many fantastic Theme Parks that are open all year round and provide a great day out for everyone in the family.  Even the faint-hearted members who don't want to scream themselves hoarse on Oblivion or the like can take a gentle boat trip or something serene around quite often attractive grounds. These parks are a real treat for kids and grown ups alike.  You might plan your holiday to be near one, visit for the day or just get lucky and find there is one right where you are holidaying.  They often need booking in advance as they do limit numbers to some extent, and the well-known ones such as Alton Towers, Thorpe Park and Chessington are so large that you might need more than one day there!  They can be pricey, especially if you have a big family, so always keep a look out for 2-for-1 deals and vouchers, as you could make a good saving. Many seaside locations  - like Blackpool Pleasure beach - have seafront funfairs which are usually in action all year round (although on a very windy day, given their location, some things might close for safety!) so it is always a good idea to check these out too.  Most of these you can buy tickets on the day.

Theme Parks and Funfairs