mod_rewrite redirect: folder files

[Commerce Brian]

Needed to redirect part of one client's site to another client's site - here's the code that was supplied - works a charm for redirecting from within a folder:
 
 

Code:

 Options +FollowSymLinks
 Options +SymlinksIfOwnerMatch
 
 RewriteEngine on
 RewriteBase /
 RewriteCond %{HTTP_HOST} [url=http://www.DomainA.co.uk]www.DomainA.co.uk[/url] [NC]
 RewriteCond %{REQUEST_URI} ^.*folder/.*$
 RewriteRule ^.*$ [url=http://www.DomainB.co.uk]http://www.DomainB.co.uk[/url] [R,L]
 

 Thanks to Void at unitedforums for that.