More heavy snowfalls in Britain Thursday caused severe disruption on the road and rail network and shut down regional airports as hundreds of schools remained closed, according to dpa. Runways at Luton airport, north of London, and at Birmingham, East Midlands airport and Cardiff were temporarily closed and train services were cancelled on busy routes to Bristol and other cities in the south-west. Snowfalls of up to 20 centimetres were recorded in parts of the English Midlands, in south-west England, Wales and Northern Ireland as weather services predicted more snow over the next few days. In the Lake District, in northern England, police found the bodies of two walkers who fell victim to the freezing conditions. Meanwhile, there were fears over a "road safety crisis" as grit supplies threatened to run out. The government has said it was hard to prepare for such unusual weather. The south-east of Britain, including London, which were paralyzed by snow earlier this week, were not affected by Thursday's snowfalls. However, forecasters predicted fresh heavy snowfalls for southern England Friday.