Free home valuation

Can anyone recommend a remortgage provider with current reasonable rates who offer a free valuation that is over and above the basic drive-by valuation (think it's a homebuyers valuation, not sure of the terminology) as i'm not getting any joy from a drive-by valuation and am reluctant to fork out for the more extensive valuation unless i have a good chance of the house being valued at what i think it's worth

Thanks