Equity: advice on rates and collective agreements for actors, singers, dancers, designers, directors, stage managers, puppeteers, comediands, voice artists and more.

Musician’s Union: rates of pay for musicians across all areas of the music business

Association of Photographers: member-only resources, a publically available usage-calculator and explanation, and the guide ‘Beyond the Lens’ with best practice in rights, ethics and business

Society of Authors: rates and fees advice for writers, illustrators and translators

Writers’ Guild of Great Britain: rates, agreements and rights for professional writers in audio, TV, film, theatre, books, comedy, poetry, animation and videogames - including for those whose work falls outside WGGB collective agreements

Association of British Science Writers: a member-only resource on minimum rates for science journalists

National Union of Journalists: advice on fees, most of it relevant to creative freelancers of all kinds. This includes a dedicated section for photographers.

The NUJ's London Freelance Branch collects anonymous reports of what is actually being paid and a fee guide.

Association of Illustrators: resources are mainly for AOI members only, including How to calculate a fee and Writing a licence

Society of Artists’ Agents: information about their constitution and aims, ethics (covering things like copyright and unpaid work) and full terms