QUOTE (yabadoouk @ Fri, 9 Nov 2007 - 15:06)
What would happen if you use the the 14 day rule but do not return S172?
You would probably find yourself being charged with failure to furnish. There is a lot of debate about whether invalid service of the NIP should absolve the keeper of the responsibility to name the driver and the consensus is that a court would probably decide that it doesn't (i.e. you are still obligated to name the driver). Just play ball would be my advice, you have a pretty watertight defence on the speeding charge so don't want to expose yourself to the s172. Members of this site usually advice using the RAC letter (use the search facility), a template which provides all the requested info whilst pointing out that the late service invalidates the NIP.