Hayling Lake

The water at Hayling Lake sits still most days, mirror-flat and ringed by trees that crowd right up to the bank. It's a proper working gravel pit that's been left to do its own thing, which is why the place feels less manicured than you'd expect from somewhere this close to St. Neots.

You can walk the perimeter - it takes the best part of an hour without hurrying - and there's decent birdwatching if you're into that sort of thing. The eastern stretch opens up nicely, and on a clear day you get unobstructed views across the water. Families with young kids might find it a bit thin on attractions after twenty minutes or so; there's no cafe, no facilities, just the lake and your own company.

The real strength here is as a quick leg-stretcher if you're based at St. Neots Camping and Caravanning Club Site down the road, or as a secondary stop if you're making a day of it around Grafham Water, which is only five miles away and has more going on. Hayling works best for walkers who want a peaceful hour by water without the crowds you'd get at busier spots.

Access seems straightforward - you can walk in from the nearby road - though I'd check locally before you visit. Go early morning for the best light and fewest people. It's free, naturally, and the sort of place that rewards a slow pace rather than ticking off sights.