Only if it goes to court, which if you have someone who will happily take the points then it won't. They're not interested in who was driving they just want the £60.
My wife got done on a mobile trap in Jan and genuinely didn't know if it was her or her mum driving so asked for photo evidence. The police said the photo wouldn't show who was driving and said it would be easier if one of them just paid up. Now if my wife had paid up and she wasn't driving then she would be just as guilty of perjury. They didn't seem that bothered. She refused the NIP and asked for photo evidence, which they duly sent, over 3 months later and still awaiting the court summons.
Everyone I implore you DO NOT sign any NIP's you get, leave it for the maximum 28 days, then plead not guilty & take it to court, beat the feckers at their own game, call their bluff. The court system is on its knees already and cannot cope, I don't think an additional 2 million cases per year will help the situation. It is the police's obligation to prove who was driving and with every NIP they fail to do so with this joke of blackmailing people into holding their hands up.
If you do eventually get a summons you can always then plead guilty at the last minute (based on the photo evidence), you do NOT have to go to court (unless you are on 9 points or excessively speeding, in which case you'd have to go to court anyway and the NIP offer is redundant).
OK you will get a stiffer fine, but it's more likely they'll either bin the case or run out of time to present it to the courts (they only have 6 months from the offence).
Maybe then they'll actually concentrate on the real causes of accidents on our roads i.e. plain bad driving/mobile phone use/uninsured drivers & unfit vehicles.