If you or your kids are looking for a new outdoor sport for summer, the UK's beach volleyball season is just starting up and there are lots of clubs offering lessons from beginner to advanced. Here's a map of clubs around the UK, though there might be more: www.google.com/mymaps/viewer?mid=1d6qYxYVvHGvx5Came4FhWDlFs5pgJ7Ck&hl=en
Also, if you look at the Volleyball England social media feeds they share information about club activities.
It's a great sport for juniors to get into, especially from around age 11 upwards, and especially if they're tall or like to jump (similar to basketball). Lots of people play indoor volleyball (6 a side) in winter and beach volleyball (2 a side) in summer.
There is a national network of tournaments at all levels, including junior tournaments. More info here: en.m.wikipedia.org/wiki/UK_Beach_Tour
It's a young sport for the UK but has been growing since the 2012 Olympics built new facilities, and it will be part of the 2022 Commonwealth Games in Birmingham too. If your kids are keen and talented Volleyball England have a national talent pathway (for UK passport holders) with trials every year.