Case here www.dailymail.co.uk/news/article-2146359/Primary-school-deeply-humiliated-ADHD-sufferer-7-banning-school-trips-end-term-disco.html
Everyone should do this every time their child is excluded from a school trip.
The 'apology' was one of the most grudging ever forced from an LA.
Reminds me of the one I received after the LGO ordered them to do so 
Perhaps there's a standard wording for 'aplologies' within LAs 