You should have said the numbers of finches are declining due to the Tory government, then you'd have got more replies.
Anyway, we also don't cut thistles on our woodland or new home and get flocks of gold and green finches. We also had a pair of bullfinches feeding off the sowthistle seed heads earlier in the year. We don't often see them and i wonder if we'll be as please in spring if they start munching fruit tree buds!
trichomonosis and extreme weather events seem major factors rather than direct interventions by kleptocrats but the continuing industrialisation of food production to fill the shelves and pockets of the supermarket owners (always good for a donation or directorship to friends in government) and the likes of monsanto reducing both habitat and food supply is also a potentially important factor in finch populations.
garden habitats have become increasingly important in the survival of viable populations of small birds.
creating and maintaining garden refuges for small birds is more a digger thing than a tory thing,well done chaps