Seems to me that there's some confusion here about the file system path on your server.

In your catalog configure you have defined it as
/home/strato/www/ki/www.........co.uk/htdocs/
but in your admin congigure you have defined it as
/home/strato/www/ki/www.........co.uk/adults4fun/
, and it seems from the warning messages as though your server is expecting
/mnt/web5/52/98/51651098/htdocs/adults4fun/
Is it possible that you are using variants of the file system from your hosting account on your new one?