Lasting power of attorney
It may become necessary in the future for someone to take decisions for you and play the role of your “attorney”.
This person is typically a family member but could also be a friend. It should be someone you trust and they must be over 18.
Citizens Advice has useful information Managing affairs for someone else.


Advance care planning
If your loved one does not wish to receive treatments in future their wishes can also be expressed in an advance decision notice.
Managing legal affairs for someone with dementia – NHS
Driving
A diagnosis of dementia or other neurodegenerative disease does not necessarily mean you have to stop driving immediately, but you must inform the DVLA and your car insurance company right away. The DVLA may contact your GP and require you to take tests to ensure you retain your ability to drive safely.
The Alzheimer’s Society has more information Driving and dementia | Alzheimer’s Society

Make a will
If you haven’t already made a will it’s a good idea to do so. We all want to make sure that our wishes are known and carried out when the time comes, so don’t put this off.
It may be that your loved one is still able to make or change their will and it’s a good idea to act while their wishes can be captured and written into the will. A solicitor will be able to help determine someone’s capacity to make or change a will.