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 Bangladesh
Here are the instructions on how to call the country of Canada from the United Kingdom.
To call Bangladesh, dial 00880 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 +880 omit the 880 and replace it with the UK international dialing code of 00. For example:
Phone Number in Bangladesh
Dialed from the United Kingdom
How to call the UK from Bangladesh
To call a landline or mobile phone in the United Kingdon from Bangladesh, dial 00 44, then dial the UK phone number, minus the leading zero. For example: