The Universal Studios GB theme park is set to be open all year round (365 days a year), with the option to buy an additional 200 acres of land, will very likely have Carnival events & will very likely have HHN (Halloween Horror Nights). Also rumour has it if it does get approved construction could begin next year (NOT confirmed).
https://news.sky.com/story/first-universal-theme-park-in-europe-to-generate-50bn-of-economic-benefits-for-uk-13158683