For the past 27 years, the RSPCA and UFAW have run an annual one day conference for animal technicians, vets and scientists etc. aimed at improving the welfare of rodents (and rabbits) used in research. See here for the reports from previous meetings: https://science.rspca.org.uk/-/rspca-welfare-meeting-reports
It is free to attend.
More information, the programme and details on how people can register can be found here: