Interestingly enough many companies offer a "bonus" as an incentive on top of a basic salary to make the £ figure look more attractive. In my experience, the hoops you have to jump through to gain this "bonus" are unachievable and relate to not just your own work, but group work which includes the Sales side (so if Sales are down, say goodbye to your bonus).

Most BioMeds of any calibre will not require an additional financial incentive to do their job well, (they just get on with it) and such a "dangled carrot" would make a potential position less attractive to the job seeker. Far better to increase the basic salary IMHO.