Thanks for your help. Got them by post from the Marina, as you suggested.

Thanks for this, but have emailed twice and had no reply. Any other suggestions? Roger

Can anyone help me please? I need some replacement fixing screws for the rudder fittings on my Marieholm IF. The screws are the 'interscrew' type' with a 12mm shank and countersunk head which fix to M8 threaded rod. I've searched all over, but cannot find where to get them from. Any suggestions? Man...