I was born and raised in London. Here are the 9 biggest mistakes I see tourists make.

• I was born and raised in London, where I’ve seen tourists make a wide range of missteps.
• Many go to classic pubs for drinks but fail to order a Sunday roast, one of the best British dishes.
• Others spend a fortune on taxis when the London Underground is cheaper and easy to navigate.

As someone who was born and raised in London, I’ve seen tourists make their fair share of mistakes — from unwittingly missing out on one of the best British dishes to clogging up traffic on escalators.

But with some advance planning and strategizing, newcomers can make the most of their time in London and save some money as they do it.

Here are the major mistakes I see visitors make while exploring my hometown.