The Sun Life Cost of Dying Report 2018 included a survey, which concluded that the deceased’s funeral wishes were fully known in only 1 in every 100 funerals. If you would like to spend ten minutes recording your funeral wishes you could use the Sun Life ‘My perfect send-off’ template: https://www.sunlife.co.uk/life-cover/over-50-life-insurance/perfect-send-off.
Have you thought about what will happen to your online / digital accounts? You should consider appointing a trusted ‘digital executor’ who would have access to all your accounts and would be able to take appropriate action according to your instructions. Again, Sun Life has produced a free set of templates specifically for this purpose; My Digital Legacy: https://www.sunlife.co.uk/life-cover/over-50-life-insurance/digital-legacy-guide/choose-a-digital-executor/.
You could complete both the above documents and keep with your Will (do not attach to your Will). Next time you update your Will you could include details of who is your ‘digital executor’.