I hate IS, its members and ideology with a vengeance. I am also strongly in favour of the death penalty for some crimes in the UK - a system we do not have. That said, I am concerned that the UK has not asked the US to forego the death penalty for the two "Beatles" due to be sent from Syria to the US for trial.
It has nothing to do with sympathy for their fate and everything to do with diplomatic and political consistency.
The UK always asks for clemency for UK citizens on death row no matter where they are held in the world. It is standard operating procedure even though it might not be successful, especially with more hardline regimes and the US. It is done for the protection of future UK citizens who might be borderline and who could be returned to the UK to serve out a sentence here. Think of the two women drug mules in Peru a few years back.
Not asking for clemency for these two monsters sets a dangerous precedent. Ask, and be turned down is job done - we are seen to doing something. Don't ask, as in this case, and it is difficult to ask again in the future. It also looks as though we are picking and choosing which UK citizens can or cannot be legally killed - we like you so we will ask, we do not like you so go to hell.