Travelling from place to place within a city can be expensive, especially if you are using black cab taxis. If you are looking to go away for a weekend to a big city such as London, then you may want to consider pre-arranging transport for the duration of your stay.
Black cabs are very quick and can be located all over the city but you will pay over the odds for a ride and the total can quickly rake up if you are sat in traffic.
Normal taxis are usually a little bit cheaper, but still not the most cost effective way to get around. The underground trains and buses operate almost every few mins and some run quite later in to the night, meaning you can use them all day. If you buy an Oyster card, you can preload it with credit and then just swipe your card every time you use a public service.
