According to the article, the crime for which he'd be extradited has a maximum penalty of five years in prison, not death.
At the rate at which the maximum sentence is growing we should be seeing him hung and quartered by mid day tomorrow.
https://homeofficemedia.blog.gov.uk/2019/04/11/extradition-f...
They may very well approve some additional offenses, but probably not ones with the death penalty.