London Heathrow is the larger and busier of the two airports, serving as a major international hub with more flights and destinations. It is also located closer to central London, making it a more convenient choice for travelers. On the other hand, Gatwick is the second busiest airport in London and is known for its efficient operations and quick check-in and security processes. It is located further south of London and is a popular choice for low-cost carriers and holiday charter flights. **

London Heathrow Airport is the busiest airport in the UK and one of the busiest in the world, while Gatwick Airport is the second busiest airport in the UK. Heathrow is located to the west of London, while Gatwick is located to the south of London. Heathrow has more international flights and connections, while Gatwick is known for its extensive European and holiday destinations. **

You can buy an Oyster Card at London Gatwick Airport at the Gatwick Express ticket office, which is located in the South Terminal. The ticket office is open daily and offers Oyster Cards for purchase, as well as top-up services for existing cards. Additionally, there are self-service machines available at the airport where you can buy and top up Oyster Cards. **

Swamp and marsh areas tend to be foggier due to the high levels of moisture present in these environments. The water in swamps and marshes evaporates easily, creating a humid atmosphere that is conducive to fog formation. Additionally, the dense vegetation in these areas can trap moisture and prevent it from dissipating, further contributing to the foggy conditions. The combination of these factors makes swamp and marsh areas more prone to fog compared to other environments. **

Marsh and swamp areas are usually foggier because of the high levels of moisture present in these environments. The water in marshes and swamps evaporates during the day, increasing humidity levels in the air. When the temperature drops at night, the moisture in the air condenses, creating fog. Additionally, the dense vegetation in marshes and swamps can trap moisture and prevent it from evaporating, contributing to the foggy conditions in these areas. **

The time it takes to get out after landing at London Gatwick Airport can vary depending on several factors such as the size of the aircraft, the time it takes to taxi to the gate, and the efficiency of the airport staff in unloading the luggage and passengers. Generally, it can take anywhere from 15 to 30 minutes for passengers to disembark from the aircraft and make their way through the airport to the arrivals area. However, this time can be longer during peak travel times or if there are any delays in the arrival process. **

The cheapest way to travel in London using public transportation is to use an Oyster card or contactless payment method. These can be used on the London Underground, buses, trams, the Docklands Light Railway, London Overground, and most National Rail services within London. The Gatwick Express is a dedicated airport train service that connects Gatwick Airport to London Victoria station. To save money on the Gatwick Express, it is recommended to book tickets in advance online, as this can often result in discounted fares. **

The transfer time from London Heathrow Airport (LHR) to Gatwick Airport (LGW) is approximately 1-2 hours, depending on the mode of transportation chosen. The most common options for transfer between the two airports are by train, coach, or taxi. The Heathrow Express train takes around 30 minutes to reach London Paddington station, from where travelers can catch a train to Gatwick Airport, which takes about 1 hour. Coaches and taxis may take longer due to traffic conditions. It is important to factor in sufficient time for the transfer to ensure a smooth connection to the connecting flight from Gatwick Airport. **