Store the number of a trusted, licensed cab company in your phone.
If you live in London, you can use the Cabwise service created by the Metropolitan Police,
Transport for London and the Mayor of London. Text 'HOME' to 60835 to get the numbers of local licensed cab
companies (charges apply, visit cabwise.com for details).
Before you get in the cab
Confirm the driver's details, and make sure this is the cab you ordered.
When you're in the cab
Sit behind the driver, in the backseat.
If you get chatting to the driver, make sure you don't divulge any personal details.
When you get home
Consider asking the driver to wait until you're safely inside before leaving.