DirectoryIndex index.php

<IfModule mod_rewrite.c>
  RewriteEngine On

  RewriteRule ^v/([^/]+)/?$ index.php?v=$1 [B,L,QSA]
  RewriteRule ^all/?$ catalogue.php [L,QSA]
  RewriteRule ^search/?$ catalogue.php [L,QSA]
  RewriteRule ^search/(.+)/?$ catalogue.php?q=$1 [B,L,QSA]
</IfModule>