Possible Clues:

• This will get around to giving a start to 26 down
• Get round to be like 25 down
• Start to hold calipers turned round and round?
• It's round there
• Childless woman in charge almost all round
• So shaped his parcel is awkward to wrap
• Manoeuvring ship clear to get round
• Circular considered from all viewpoints
• Globe-shaped
• Roun-trip helps car round one