Energy
Ofgem - https://www.ofgem.gov.uk/information-consumers/energy-advice-households
British Gas - https://britishgasenergytrust.org.uk/ (not just for British Gas customers)
Eon - https://www.eonenergy.com/more-for-your-home/energy-fund.html
Octopus - https://octopus.energy/blog/struggling-to-pay/
Citizens Advice Energy - https://www.citizensadvice.org.uk/consumer/energy/get-energy-advice/.
Winter Fuel Payment - https://www.gov.uk/winter-fuel-payment
Water
Wessex Water - https://www.wessexwater.co.uk/your-account/help-paying
Ofwat - https://www.ofwat.gov.uk/households/
Council Tax
https://www.dorsetcouncil.gov.uk/benefits/council-tax-support/council-tax-support
TV Licence