Coaches: a trip 2 years ago that cost, say, £225 for a coach now costs £400+
School make no profit on trips, and finances would be audited to assure this.
There is not enough in school budgets to pay for classs trips. A two intake prinary school with 2 classes in eac year, so 14 classes, running trips costing, say £700 each as an example, would be appx £9800. No schools can cover that. Our school is cutting jobs as budgets (again) this year are dire: a top up funding that has been available in previous years is looking at risk, many schools will be significantly impacted by this. Previous year salary increases for teachers were not covered by a budget increase, it had to come from schools existing budgets.
But, book a local area trip (eg walk to park, local museum) you get families complaining it's a shit trip and where is the fun trip (even though they should be curriculum linked).
And as for residentials... we have used a venue where it wasn't staffed after daytime activities meaning accompanying school staff covered cooking breakfast, packed lunches, evening meals, cleaning, night duties instead of venue staff etc. A residential does not give staff a free night or much sleep!