Martin Lewis

So I suspect a material number of people who do pay don't know they don't need to.

And that means that our national flag carrier, British Airways...

for me, feels a little bit less like it's acting like a flagship and a little bit more like it's acting like a pirate ship.

It's not the only one, though.

We've seen Sherpas toured on Thomas Cook and Virgin Atlantic.

We've seen tour operator Saga operating via a different system, which is even more expensive than Sherpa when you go through it.

So let me be really plain.

If you want an Australian e-visa, go to the Australian Government's Home Affairs website where it's free.

If you want a Canadian ETA, go to the Canadian Government's ETA website where you'll be led through the process answering just a few simple questions.

If you want the European Travel Information and Authorization System, the ETIAS, it hasn't started yet.

So anyone who's promising to get you one, they're wrong and they're a shyster, so don't touch them.

New Zealand ETA, New Zealand Immigration Website, USESTA, go to the ESTA website.

For all other visas and travel permits, the rule of thumb, go through the UK government's Foreign Commonwealth and Development Office site, the FCO site, and it'll link you to the right site for your information.

Do not pay more than you need.

I don't think it's that good that now airlines are just

trying to grab an extra digital snack on your cash when it's unnecessary for getting you travel permits and visas too.

Do let me know if you've seen them and if you paid and you didn't realise.

Get in touch at martinlewispodcast at bbc.co.uk.

And I think that probably is the place to end, Si.

Perfect.