Starbear
There are a few more that you missed.
1. Error in the load sheet so a/c is way overweight due to the amount of fuel uploaded.
2. Incorrect fuel amount uploaded.
With both issues you would not be able to remove the fuel, so the only way to reduce the fuel figure would be to burn it off.
The only way to do this would be high power engine runs, only if you could find a suitable area at the airport to perform them. However if this flight was a night flight most airports would not allow that solution. Even if you could get permission to do so it might take time and the crew might not have enough duty time. In this case it would be better to remove the 100 pax and operate back to the UK, thus saving the company a shed load of more EU 261s.