VINcent plus four digits. The numerical equivalent of VIN was 846 and all the caller got was the speaking clock (i.e. 846 is also numerical equivalent of TIM) in the big city "Director" areas. At around the same time as the other Big Number Change changes, Ofcom revised their recommendations to update the prefixes, add additional areas and increase the size of the allocation from 10 to 1,000 numbers per block. Those changes are listed in the Big Number Change article. In Coronation Street, the fictional Manchester suburb of Weatherfield uses the unallocated range (0161) 715 xxxx. Special service numbers Emergency services and helplines The UK has two free emergency numbers: the traditional 999, which is still widely used, and the EU standard 112. Both 999 and 112 are used to contact all emergency services: Police, Fire Service, Ambulance Service and Coastguard. (Standard advice for Mountain Rescue or Cave Rescue is to ask the emergency operator for the police, who oversee the communication with these two services.) Both numbers can be called from mobile phones with the keylock on or without entering the PIN where that would otherwise be required. Although some mobile phones allow emergency calls to be attempted without a SIM card, at present the UK networks reject such calls. Since November 2009, an emergency call can be made through any UK mobile network as long as there is a SIM for any valid UK network in the handset. Although UK VOIP phone providers are required to offer 999 / 112 service, this is subject to a registration for the service and with a verified service address and users need to be aware such service may not work in a power blackout; however, International VOIP providers may not provide this service. The chargeable number 101 was introduced for non-urgent crime and community safety calls on a trial basis in 2006. In Wales, the scheme was taken forward by all four police forces, who adopted the number for non-emergency calls on a permanent basis in early 2009. In England, the scheme was on trial until 2012, when it was adopted nationwide and the cost to call changed from 10p per call to 15p per call. In Northern Ireland, the number was introduced by the Police Service of Northern Ireland in March 2014. Since 1 April 2020 the number is free to call. The operator is obtained via 100 from