Hey there,
Firstly YES

you can look to claim back both unplanned O.D fees & returned items + any interest relating to the unplanned overdraft fees.
2nd NO

they wont take away your O.Draft facility, however in saying that I do know that if you have an O.Draft that you only use x amount of they may when youre due your review recieve a letter stating that as you only ever use xxx amount then we are going to put your O.Draft at that set amount....however if you prefer to have that amount even though you dont use it, you know having it there as a safty net should you need it. All you have to do is call and say you wish it to remain the same as it has always been then they can leave it at that for you.
PUTTING IN YOUR CLIAM....
now you've got your statements use a highlighter to mark out the charges, then write a cover letter-which can be as long or as short as you like, and send it to= LloydsTSB PLC, BOX 1, BX1 1LT.
You''ll then recieve a letter telling you that they will place your request on hold untill the outcome of the pending courts decision, but this is the same for everyone regardless how much, or how you bank with.
DEAR SIR/MADAM
ACCOUNT NO XXXXXXX
I'M WRITING TO REQUEST THAT YOU REPAY ALL THE DEFAULT CHARGES THAT HAVE BEEN APPILED TO MY ACCOUNT DURING THE PAST xxx YEARS. I DO NOT BELIEVE THESE CHARGES REFLECT THE TRUE COST TO LLOYDS BANKING GROUP FOR GOING INTO UNPLANNED OVERDRAFT AND HAVING ITEMS RETURNED TO MY ACCOUNT.
THE CHARGES TOTAL xxxxx. I BELIEVE THAT I HAVE BEEN DEPRIVED OF THIS MONEY AND THEREFORE ASK THAT YOU REPAY ME THE FULL AMOUNT. PLEASE FIND A FULL SCHEDULE OF THE CHARGES ENCLOSED.
I LOOK FORWARD TO A FULL RESPONSE TO THIS LETTER WITHIN 14 DAYS.
YOURS FAITHFULLY