The National Cyber Security Centre has launched a new Cyber Action Plan tool, aimed at organisations with up to 50 employees (there are versions for individuals and families too).
By answering a few simple questions, it creates a personalised cyber security actions checklist and provides links to other free NCSC resources.
If you have the Cyber Essentials accreditation, you are likely to have this covered already, but otherwise it is a good benchmark and offers useful guidance.
You can find all the information at https://www.ncsc.gov.uk/cyberaware/actionplan.