Disco 4 halogen to xenon light unit change

hi there first post and new to forum, hope I can get some help, as no technical knowledge of LR's.

I have a 2014 discovery with halogen light and what to change the unit to the xenon ones. Was hoping for straight swap with unit, but unsure if this can be done without upgrading anything else.
If there is a need to change anything else part form the compete unit what is needed, and estimate of how much / who does this. Photo of current light attached
From Yorkshire area
Kind regards

Pop over to the D3/4 forum and in the D4 section there will be what you are after, bare in mind theres different types of hid/xenon lamp units on the D3 so Im sure the D4 will be the same, xenon/adaptive xenon and with/without cornering lamps, Im not sure if you have to tell the car you have fitted adaptive units, but again the answer will be over there.