How do you use mod_rewrite to move a site down a sub directory?

Question

I have a site with URLs like this:

http://domain.co.uk/subdir/page.php

I have redesigned the site so URLs are now like this:

http://domain.co.uk/page.php

How can I 301 redirect all the pages to their new locations using Apache's mod_rewrite?

Answer 1

Something like this should do the trick, I believe:

RewriteRule ^subdir/(.*)$ http://domain.co.uk/$1 [R=301,QSA,L]

Answer 2

This should do the trick:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule ^subdir/(.*)$ http://domain.co.uk/$1 [R=301,L]
</IfModule>

Update: Tested it, it works.