TBML,
even little old Australia has 19 x P-3's PLUS 12 x Dash 8 patrollers with Coastwatch [Border Protection Command]
If people were trying to get into the UK instead of leaving it now it's broke, then you might need something like this.
Numbers can seem impressive, however, I remember sitting on SAR at ISK with no serviceable A/C after several were declared 'S' at morning prayers.