Hi @iain
I just checked your site and it looks like you got your email campaign sent off.
I think what was happening there is you've pasted in a table from an email signature in Outlook or another system.
That table has no borders so it is somewhat 'invisible'. When you are pressing Delete it is shifting the table to be on the same line as the "Read More" text.
A little tip - you can press Control + Shift + V in Chrome to "Paste as Text". This ensures that any tables and other formatting elements are removed when you paste.