United Kingdom

The UK is more varied than a London-only trip suggests. The capital is one of the world's great cities, but the country opens up north and west: the Scottish Highlands, the Lake District, the Welsh coast, and small cities like Edinburgh and Bath that punch far above their size. The weather is the standing joke and the genuine catch. Late spring through early autumn is the window.

London earns four or five days without trying: free national museums, Borough Market grazing, a West End play, and long walks between neighbourhoods that feel like separate cities. Then take the train out — Bath or York in under two hours, Edinburgh in four and a half — and rent a car only when you head for the Highlands or Cornwall. London hotels and walk-up train fares are where the money disappears; book both ahead and the whole country gets cheaper.

The weather is not a joke, it's a planning constraint: a grey, drizzly week is possible in any month, July included. London prices rival New York's, last-minute rail fares sting, and rural Sundays can still shut a town down. If your trip depends on sunshine, book elsewhere or accept the gamble. What you get instead is density — two thousand years of visible history, the world's best pubs, and four countries on one compact island.