"an amendment which adds or substitutes a new cause of action but one which is linked to or arises out of the same facts as the original claim."
"an amendment which adds or substitutes a wholly new claim or cause of action which is not connected to the original claim at all."
"As regards to the health redeployment, please indicate those persons that are either registered disabled or have a certificate of permanent incapacity issued, which as you know is considered by the Council to be an indication that the person is disabled under the provisions of the Disability Discrimination Act."