The bands are only relevant in court, not for FPNs. Assuming he's not on 9 points or something, surely the only way that is going to court is if he doesn't return the NIP or rejects the FPN?
Might even be offered a speed awareness course, 41 in a 30 is on the upper end of the guidelines apparently.
No chance in hell are you getting a SAC for that, even if first time offence. It's well beyond the tolerance level of almost all forces for a 30 zone. Punishment margins in low speed areas is far harsher than on a NSL or Motorway.