LONDON (AFP) - Thick fog hit flights to and from Britain for a second day on Monday with dozens of services cancelled at the major international hub of London Heathrow. Thirty-seven flights arriving at Heathrow and 22 departing were cancelled in the early hours of Monday, a spokesman said. At London City airport in the east of the capital, which handles many business flights, the fog forced the cancellation of eight flights and two had to be rerouted by 0800 GMT. The fog was expected to lift during the morning, forecasters said. Several thousand passengers were stranded at Heathrow and London City on Sunday because of similar conditions. A total of 132 flights were cancelled at Heathrow and 44 at the smaller airport. "Heathrow experienced heavy fog on Sunday and overnight," a Heathrow spokeswoman said. "The fog has started to clear and there are now no restrictions on flying."