Enduring Powers of Attorney (EPA) were replaced by LPAs on 1st October 2007 but they can still be used if validly executed. EPAs only deal with the property and financial affairs of the Donor whereas LPAs can be for both property, financial affairs and health and welfare. If you have an EPA and are happy with whom you have appointed but would like to appoint attorneys to deal with your health and welfare, you can make an LPA to cover just your health and welfare decisions.
The other main difference is that an LPA must be registered for it to be valid but EPAs only need to be registered if the Attorneys have reason to believe that the Donor is losing mental capacity and is unable to manage their financial affairs on a day-to-day basis.