Because the rights of British citizens have been subordinated to relations with the USA.
The Extradition Treaty with the USA is plainly unbalanced. Our courts must comply with a demand from the USA with no good grounds demonstrated, whereas we must provide more substantial grounds to extradite from the USA.
Repeal the treaty so that each country must provide proof of guilt to make the extradition more than a formality.
The current treaty is palpably unbalanced and partial. It fails to afford equitable and reasonable protections to UK citizens whose extraditions are sought.