I am flying into an UK airport at night and planned to sleep in the airport for the early flight out of UK in the next morning. My passport allow me to have visa free visit to UK and I have been in UK for a few times.
The flights into and out of UK are operated by two different airlines, so I have to get through the immigration at night and check-in the next morning.
I know that I will need to fill in a landing card upon my arrival in UK. There is a field called 'Contact Address in UK', how should I fill in this field in the form? Did anyone have encounter this situation before and know if there is more extra work need to be done at the immigration?