The world's oldest emergency service - the UK's 999 - has turned 80 years old.

From handling roughly 1,000 calls during its first week of operation in London back in 1937, the service now takes up to 560,000 calls every seven days - equating to 30 million a year.

Glasgow was the second city to introduce 999 in 1938.

World War Two delayed the roll-out across the UK for some years, until it reached all major towns and cities by 1948.

According to BT, more than 97% of 999 calls are now answered within five seconds.

Peak times are shown to be around midnight on Friday and Saturdays, with approximately 5,000 calls made an hour.

The early hours of New Year's Day are traditionally the busiest time of the year, when up to 9,000 calls can be received each hour.

A selection of less 'urgent' 999 calls: