A person making a hoax call to emergency services can be taken to court and may face a fine of up to £5,000 and/or be sent to prison for six months. Calls are easy to trace even from a mobile ‘phone.
- Hoax 999 calls @ FindLaw UK
Excerpt: All calls to 999 are voice recorded and it is very easy for the telephone operator to trace the telephone that the hoaxer has called from and, in turn, the address that they have called from. This makes it fairly easy to detect hoax callers.