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
Help with energy bills: https://www.gov.uk/get-help-energy-bills
The Energy Bill Support Scheme Alternative Funding Scheme (£400), they can apply via this link: https://www.gov.uk/apply-energy-bill-support-if-not-automatic
Alternative Fuel Payment (£200), they can apply through this link: https://www.gov.uk/apply-alternative-fuel-bill-support-if-not-automatic
If you require assistance with their application, please do encourage them to get in contact with the helpline team (open Mon-Fri from 8am to 6pm).
Email: alternativefunding@ebss.beis.gov.uk
Telephone: 0808 175 3287
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