Whoiam, This is the offer from PSS:
'FREE 25kg Carton (not exceeding 5 cubic feet) via airfreight service to arrival airport. This service includes collection of the owner packed carton on your removal day. A charge of £8.50 per kilogram will apply, should you exceed the 25kg allowance. Please note that this service is to arrival airport only and that you will be liable for all destination inbound charges including but not limited to airline handling, customs clearance charges including duty/taxes, inspection fees, fumigation or cleaning charges, once the consignment arrives at its destination airport.