Thanks for responding. There were no contact details on the NIP form. Any idea how I can find a number? I've been googling but not turned up anything. Is it best to call the station in the area where the offence occurred? Is there a usually a timeframe within which people receive a response?
I've just looked at my local forces (Met and Surrey) and both let you enquire via their website, so that's worth a try.
A google search for "surrey police central ticket office" leads you to a phone number.
Anyway, if you tell us the force someone on here may have a number.
Most people seem to hear within 3-4 weeks at most.