Electronic smartcards called Oyster Cards offer the cheapest fares for London travel, but if you’re in town for only a few days, a Travelcard may be more convenient. These give unlimited travel on the Tube, DLR, buses and Overground rail, plus a third off scheduled riverboat fares. Travelcards can be bought for one, three or seven days, plus longer periods, with the cost depending on the zones you travel through. An off-peak, one-day Travelcard for Zones 1-2 costs around £6.60.
First Capital Connect and Southern offer services taking between 35-40 minutes, with fares priced from £8.90. Taxis can be expensive, with journeys taking about an hour and costing more than £50.
Dot 2 Dot offers a bus shuttle into central London (20 minutes; £25), 24 hours a day, seven days a week.
The Thames is crossed by 33 bridges and four tunnels (not including Tube tunnels). The oldest surviving bridge is the Clattern Bridge at Kingston upon Thames, Surrey, which dates back to 1293.