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 Mexico
Here are the instructions on how to call the country of Canada from the United Kingdom.
To call Mexico, dial 0052 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 +52 omit the 52 and replace it with the UK international dialing code of 00. For example:
Phone Number in Mexico
Dialed from the United Kingdom
+52 xx xxxx xxxx
00 xx xxxx xxxx
20 4329 6943
00 20 4329 6943
How to call the UK from Mexico
To call a landline or mobile phone in the United Kingdon from Mexico, dial 00 44, then dial the UK phone number, minus the leading zero. For example: