Apology accepted
> "I would like to sincerely apologise on behalf of the Council for the administrative error made in sending this email identifying recipients' individual email addresses.
At least they had the decency to call it an administrative error rather than try and claim it was a "computer error".
It's a bit worrying that they seem to have some boiler-plate text ready to cover the situation though. I wonder what else they have to hand: We sincerely apologise for the disruption to dog walkers following the destruction of the dog litter bin in the park when a wayward rocket primary ascent stage crashed down onto it. We will endeavour to re-purpose the remains of the rocket into a new bin as soon as possible, in accordance with our recycling guidelines.