Blockquotes add a million horizontal lines. This makes the indentation provided by TinyMCE look foul.

http://leedsrocksoc.co.uk/sites/default/themes/rocksoc/blue/style.css is the offending file,

blockquote (line 153)

{

border-top-width: 1px;

border-right-width-value: 0px;

border-bottom-width: 1px;

border-left-width-value: 0px;

border-left-width-ltr-source: physical;

border-left-width-rtl-source: physical;

border-right-width-ltr-source: physical;

border-right-width-rtl-source: physical;

border-top-style: solid;

border-right-style-value: solid;

border-bottom-style: solid;

border-left-style-value: solid;

border-left-style-ltr-source: physical;

border-left-style-rtl-source: physical;

border-right-style-ltr-source: physical;

border-right-style-rtl-source: physical;

margin-top: 0.5em;

margin-right: 1em;

margin-bottom: 0.5em;

margin-left: 1em;

padding-top: 0.3em;

padding-right: 0.3em;

padding-bottom: 0.3em;

padding-left: 0.3em;

font-style: italic;

}