Do you mean Research Assistant work? the pay is good (about £24,000 per year, so about £12.30/hr before t ax etc) and this kind of experience looks brilliant on your CV (for many reasons, eg shows you are keen, willing, able to work in a lab etc) - though of course, this depends on the direction you are hoping to go in. (I worked as an RA for 3 yrs and this definitely helped me to secure a post doc position) hope this helps!