Lights and sockets should be easy to fit, generally they would be added to existing circuit(s) in your home as they are light occasional loads.
Having them on separate circuits is an advantage as if there is a fault or damage you only lose the outside stuff, but failing that (for cost/convenience) then an isolator switch would be enough to allow your home power to be restored until an outside fault is fixed.
However an EV charge will be a dedicated high-power circuit back to your consumer unit (fuse box) so the additional cable route length needs to be considered in its choice.
Having them on separate circuits is an advantage as if there is a fault or damage you only lose the outside stuff, but failing that (for cost/convenience) then an isolator switch would be enough to allow your home power to be restored until an outside fault is fixed.
However an EV charge will be a dedicated high-power circuit back to your consumer unit (fuse box) so the additional cable route length needs to be considered in its choice.