Have you defined the font size for your <h4> tag?
It’s going to wrap within the limited space. You can add "margin-bottom:0px;" to your CSS.
I'm sure you're probably going to have extra space because of the <div> tag. Remove the div and put the align="right" into your <td> tag. <td align="right">


Why not move all this styling to your external css as well.

.h4 {font: 14px/1 Verdana, Arial, Helvetica, sans-serif;}
.bantext {color:#ffffff; font-weight:bold; margin-bottom:0px;}

<H4 class="bantext">Barclaycard, Goldfish card, American Express and other cheap credit cards at BagTheCash.com</H4>

Just some thoughts, hope it helps!