Leonardo Royal Hotel London City

Rating: 8 on a scale of 10.
A great looking and beautifully maintained facility. There are no lane lines on the bottom and it has only rope lane dividers. Weekends are busy with recreation swimming but it is open 365 days of the year. It's not that busy through the week, so it's a valuable place to know about in London.

This is a new leader in London hotel pools. Fully 25m long! No lines on the bottom but gorgeous anyway. A bit warm for experienced lap swimmers.

A very good option for lap swimming, as the are usually not more than 10 swimmers at peak times. Very clean pool and facilities. Slightly more expensive than public pools but well worth it, as they provide towels, locker, soap and shampoo, and fruit! Boards and pullboys are available. There is a clock with a hand indicating seconds.