Allys
My understanding is that copy bank statements have to be provided with application and if these show charges for going over limit, the chances of getting a mortgage are slim. The mortgage company would be looking at how the overdraft has been managed as this would help assess risk regarding chance of mortgage repayment problems.
If you do a google search for moneymagpie mortgage, there is good article, 'how to up your mortgage chances'. I can't add link as this site does not allow.
Also have a look at mortgage page on this site http://www.moneysupermarket.com/mortgages/
If finding a mortgage proves difficult do a google search for non-conforming mortgages. From what I have seen the rates for these are 9.5%. Better to pay off overdrafts/loans than be stitched up paying high rates.
Best advice is see a financial advisor to look at the options. Taking the wrong decisions now, could cost thousands.I would never advise anyone to provide any inaccurate information. On any application, you have to declare addresses going back over atleast the last 3 years. Lenders are being very cautious at the moment and would appear to be taking alot longer to check applications.
huckster