• For looking up authorities - https://www.bailii.org/
• NICE and British National Formulary - https://bnf.nice.org.uk/
• Oxford English Dictionary - https://www.oed.com/
• Merriam-Webster dictionary (used in the US) - https://www.merriam-webster.com/
• Macquarie Dictionary (used in Australia) - https://www.macquariedictionary.com.au/
• Helpful grammar and punctuation (US rules) https://www.margieholdscourt.com/