In the UK, LPA stands for Lasting Power of Attorney, and GPA stands for General Power of Attorney.
The main difference between the two is that an LPA is a legal document that allows an individual (the donor) to appoint one or more people (the attorneys) to make decisions on their behalf in case they lose mental capacity. An LPA can cover decisions about health and welfare, as well as property and financial affairs.
On the other hand, a GPA is a legal document that allows an individual (the donor) to appoint an attorney to make decisions on their behalf for a specific period of time, such as when they are out of the country or physically unable to manage their affairs. An GPA only covers decisions about property and financial affairs.
Another difference is that an LPA must be registered with the Office of the Public Guardian before it can be used, while an GPA does not need to be registered.