Hi Roger, 

You should be able to delete additional lines in the Editor window, however perhaps some of the lines are formatted as a Heading? - which would take up slightly more space than a paragraph break as they're usually in a bigger font size?

I usually check line spacing by looking at the HTML. This can be a little daunting if you're not familiar with HTML code, but it can help you to understand what's going on. 

For example, on our page '5 ways finding volunteers just got easier'  here is the first few lines of code I see:

<h1>5 ways finding volunteers just got easier</h1>
<p>&nbsp;</p>
<p>It&rsquo;s been just under 2 years since we launched our free online volunteer recruitment platform Volunteer Connect, and it&rsquo;s encouraging that so many of you are using it to promote your opportunities.</p>

First, the <h1> tags around the title just tell the browser of the reader to format it in a particular font size, color, font weight etc.  - you usually select Header 1 in the drop down menu on the Editor.

Everything within a <p> and </p> tag is a paragraph.

You can see that in the first paragraph is written &nbsp; - this is just code for non-breaking space, which means that the only thing this paragraph contains is a space. This is equivalent to a line break.

If you look at your HTML code (and it doesn't scare you too much!) you might find that instead of <p>&nbsp;</p> you have multiple of them - in which case just delete one or two.

You might also find that you have <h1>&nbsp;</h1> instead - which is actually just ONE line but where the space is much bigger font-size. If this is the case, then just overwrite the line to <p>&nbsp;</p>

Hope that helps and doesn't confuse - as I said that's how I do it, but there may be a simpler way?

Matt