Through Lasting Power of Attorney (LPA), you can appoint a person (or multiple persons) that can act on your behalf should you become incapacitated.
If you do not have an LPA in place, there might come a time where there will be nobody to make decisions for you regarding your future care, bills etc. If this becomes the case you can apply to the Court of Professions to act as a deputy, but the process is lengthy and complicated.
An LPA is quick to draft and can save invaluable time when it comes to making decisions about you and your future.