OP
ok thank you Brian...this is the first time I am renting a place so i guess there is a lot to learnBeing generous, this is just another case of an electrician testing to what he thinks the rules should be, not what they actually are.
Being not so generous, it could be viewed as a money generating exercise.
Condemning the socket under the sink (on IP grounds) is beyond ridiculous. It's even mounted on the structure of the house, rather than the cupboard carcase (for which there is a tenuous argument that it's not permitted.)
Regarding the bathroom lights, there is a regulation that requires equipment to be suitable for the environment into which it is installed, but unless there is evidence of considerable condensation in this bathroom, I wouldn't consider this remotely applicable.
If fitting new lights in a bathroom, I think most of us would fit IP rated ones, but they are not a requirement.