Possible Clues:

• Sweetheart nurse trained to look after
• Protect college from criticism
• Guarantee to follow across river
• Guarantee criticism won't start
• Be certain to follow about 17 across, in short
• Pledge
• Guarantee unconfident leader's to be changed
• It's just not in 29 across to disentangle this
• Criminal seen round ancient city? Make certain
• Seen about, you are, in a certain way (6)