Nottingham University is currently researching an alternative approach to Varroa control, using heat packs similar to hand-warmers.
The nature of the treatment means that Varroa are unable to develop a resistance to it, plus it is very low cost (the estimated cost of each BeeSave pack is £10 and can be used over 100 times).
For more information, please see:
https://www.theengineer.co.uk/beesave-honeybee-varroa-mite-nottingham/
NEWBKA is a branch of the Worcestershire Beekeepers' Association. It exists to promote beekeeping in NE Worcestershire by providing public information, swarm collecting and by running courses for intending and improving beekeepers.