Is it OK to travel without travel insurance?

If you don’t have travel insurance you will have to pay out of your own pocket to deal with a problem while you’re away. Or you may lose money if you have to cancel a trip and can’t get your money back. This could cost you thousands of pounds.

https://www.citizensadvice.org.uk/consumer/insurance/insurance/types-of-insurance/travel-insurance1/travel-insurance/#:~:text=If%20you%20don’t%20have,cost%20you%20thousands%20of%20pounds.