We usually go and stay with my parents in Somerset for part of the summer holidays. This year they're going to take us to Cornwall, near St. Ives, and it will be my kids' first proper British seaside holiday. In July so we are hoping for warm and sunny, but obviously we know that the British summer isn't always what you would hope.
I need to get them some new swimwear anyway but wondering about rash vests and beach shorts. Will it be potentially chilly with just a swimming costume or just swim shorts (I have a boy and a girl)? Also for the sun protection and, for my daughter, the practicality of having a 2-piece when it comes to getting changed and going to the loo etc.
What is the most practical thing for kids to wear on British beaches?