Sleaford Leisure Centre

The swimming lessons here are genuinely good — kids actually progress, which isn’t something you can say about every leisure centre. Staff are friendly without being over the top, and they clearly take pride in keeping the place clean, changing rooms included. The 25m pool has steps for easy access and the water’s kept warm, which makes a difference if you’re bringing little ones. Restrooms are on-site and well maintained. A solid local option that doesn’t feel like an afterthought.