STCF Sub contractor survey

The Specialist Trade Contractor Federation (STCF) is wanting to get more details from our sub-contractors about the use of retentions and the increasing use of bonds. 

This information will only be used in an aggregated format so no individual can be identified and all information will remain confidential. 
1.Are main contractors demanding both bonds and retentions from you as a sub-contractor? (if Yes can you give us a estimated percentage of how often?)
2.·Can you name the main contractors that are demanding bonds from their subcontractors ( List of contractors - All information will be aggregated and kept confidential)
3.·What is the bonding rate, e.g., 10% of contract value?
4.How often are subcontractors’ bonds called up?
5.What effect will bonds have on subcontractors (particularly cashflow)?
6.Do you feel there is enough focus on the reporting obligations of main contractors and that they adhere to the reporting requirements?