Wild Camping & Campsites

Hi, Hubby and Me would like to go away this weekend, 1st time ever in our van and 1st time. We are taking the cat...yes really 😂 Does anyone know where we can go in the UK, with the cat, for the weekend? I finish work Friday night, bit of stressful job, hence wanting to get away, and back Sunday as stepdaughter is flying out with her family and needs her 2 dogs and two cats looking after.😮If anyone could suggest somewhere, I would be very grateful. Mary x