Only if they are taxing you for the premium as a BIK which I presume they are not. If so you get full relief at marginal tax rate for premiums up to 10% of your salary.
If they are not applying BIK then you have no gain by claiming. You would actually lose as you should be paying prsi on the BIK.
I stand to be corrected here but I think this area is generally overlooked with a blind eye because when a company pays the premium it is normally part of a group scheme and thus impossible to say what the benifit is for each person. So a company can't properly charge BIK. The premium is not calculated individually for each employee. Rather the ins company apply an average rate per pound of salary.