Instructions for calling from the UK to international locations requires special calling codes that allow you to connect to countries outside of the United Kingdom.
Calling out to Hong Kong
Here are the instructions on how to call the country of Canada from the United Kingdom.
To call Hong Kong, dial 00852 and then enter the phone number of the person or location you’re trying to reach. If the phone number is displayed with a leading +852 omit the 852 and replace it with the UK international dialing code of 00. For example:
Phone Number in Hong Kong
Dialed from the United Kingdom
+852 xxx xxxxx
00 xxx xxxxx
00 229 28378
How to call the UK from Hong Kong
To call a landline or mobile phone in the United Kingdon from Hong Kong, dial 00 44, then dial the UK phone number, minus the leading zero. For example: