In the UK, the bigger Boots used to have cheap safety handles and blades (at least ~5 years ago when I was using them.) I'd guess they're probably in the bigge

In the UK, the bigger Boots used to have cheap safety handles and blades (at least ~5 years ago when I was using them.) I'd guess they're probably in the bigger Superdrugs as well. There's also a bunch of smaller brands like Truefitt & Hill, Mühle, etc., that have physical shops in London which sell them. Definitely not "you can only buy on the internet".