Do I need the code, cos my friend is selling Mass Effect 2 to me for 20 pounds without the card and the game costs like 30 pounds, is the extra 10 pounds worth it just for the card???????? 

" Do I need the code, cos my friend is selling Mass Effect 2 to me for 20 pounds without the card and the game costs like 30 pounds, is the extra 10 pounds worth it just for the card????????  "

Depends on what DLC Bioware is going to be putting out in the future. Free downloadable content is pretty nice though.

Haven't had an oppourtunity to pop the game in yet, but unless you are going to just play it through and be done it probably is worth it. Extra characters and DLC really extend the playability of the game.

also if you want to get the s-rank on here

Not really. Once the games done, even with DLC, I doubt you'll go back.

Wait for the Firewalker DLC to come out and then ask.  Currently, I don't think all the DLC they put out is worth the money.  Zaeed is a cool crew member, but there are no dialog options with him.  The Normandy mission sucks.  The weapons they have given are good, but not necessary (the Eviscerator shotgun is a pretty good for Vanguards though).
 
Overall, it's just not worth the extra cash, but the Firewalker DLC might change that.