British Citizens are allowed to travel to the UAE without a pre-arranged visa.

My question is: How can you find out if you are on the blacklist before you travel?

No-one would want to put themselves through the expense in time and money, the stress of uncertainty and the embarrassment of being turned away or deported.

You should be the only one who knows if you have violated immigration laws in UAE or not.

If you...

overstayed the visa.
worked without authorization.
had criminal record in UAE, etc.

Then you won't be able to enter the country.