Its population as of the 2001 census was 8,000,550; the most populous region. The highest point is Walbury Hill in Berkshire at 297m/974 ft. In common usage the area referred to by South East may vary.
The Kennet and Avon Canal was built between 1794 and 1810 by John Rennie, to convey commercial barges carrying a variety of cargoes. It later fell into disuse and disrepair before being restored from 1970 to 1990. It is now fully navigable, mostly for leisure boating.