 How to call:
00 - Exit code when making an international call from Bulgaria
44 - UK country code for inbound calls
20 - London city code
00 + 44 + 20 + Local Number - International dialing code format
 World Times:
The time in Bulgaria is now 13:17:47 PM (01:17:47 PM)
The time in London United Kingdom is now 11:17:47 AM (11:17:47 AM)
 Mobile codes:
To call a mobile phone in United Kingdom from Bulgaria use the following dialing code format: 00 + 44 + Mobile Code* + The Number
*United Kingdom has multiple mobile carriers: 74## (Mostly mobile broadband), 75##, 7624 (Isle of Man), 77##, 78##, 79##
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