Recently, I was explaining my research to another academic from a different field. I was describing how, when imaging living animals under the microscope, we strive to keep laser power levels to the minimum needed. The question I got in return was: “Is that for the animal’s sake or for the imaging?”. And of course the answer is both - in general, I find that good science and better microscopy align very well with performing more humane animal research.
This article is about how researchers are working to improve animal research by minimising numbers used, sharing animals and data and refining experimental procedures. This is not an article on whether or not animal experimentation should or should not be done; that is a matter of personal ethics. However, should you be interested in the rules and regulations surrounding animal research in the UK, I would suggest you start with Understanding Animal Research  and the National Centre for the Replacement, Refinement and Reduction of Animals in Research (the NC3RS) .