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 Singapore
Here are the instructions on how to call the country of Canada from the United Kingdom.
To call Singapore, dial 0065 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 +65 omit the 65 and replace it with the UK international dialing code of 00. For example:
Phone Number in Singapore
Dialed from the United Kingdom
+65 xxxx xxxx
00 xxxx xxxx
00 6623 3433
How to call the UK from Singapore
To call a landline or mobile phone in the United Kingdon from Singapore, dial 00x 44, then dial the UK phone number, minus the leading zero. For example: