Say, on the first round of applications for a TC you are rejected by a firm, if you subsequently apply the next year to the same firm, are you at a disadvantage having been rejected once already, or is it a level playing field, and they dont take into account prior rejections?
A lot of the firms have something about this on their website - some advise you not to reapply (especially if you made it to interview stage and they rejected you). Some allow it. It varies. All I'd say is if you do reapply to the same firm, try and have something big and new on your application otherwise you're not likely to be regarded any more a credible candidate the second time round.