How do I dial USA from UK?

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Making International Calls : How to Call the United Kingdom From the United States

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How to call the UK from the US?

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What is my country code for USA? - United states country code - United States Dialing Code

What is the dialing code for international calls from Australia?

How To Call UK from US or Canada - Step By Step Explained with Pictures

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What is the code of London?

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