<font face="Verdana, Arial, Helvetica" size="2">"Leeds Tower, G-CD, Delta 1 ready for departure"
"G-CD line up and depart immediately"
"G-CD lining up"</font>
"Leeds Tower, G-CD, Delta 1 ready for departure"
"G-CD, cleared for take off"
"G-CD cleared for take off"
Is the correct phraseology. In your case, the pilot only replied to the clearance to line up. Only a controller can initiate the words "take off" and the pilot should acknowledge that clearance.
Rod