On arrival, United Kingdom applies Transfer of Residence (ToR1) relief under UK customs framework (jurisdiction-specific). Import VAT in United Kingdom is 20%, and relief is what keeps your household goods out of that charge. Shipments normally arrive through Southampton or Felixstowe.
This page covers what actually changes on the Canada → United Kingdom route: what you will pay, how long the shipment is at sea, the paperwork United Kingdom customs expects from a departure in Canada, and what to do about pets, a vehicle and somewhere to live when you land.
Departures from Canada normally load at Montreal, Halifax, Toronto (road feeder). Canadian household-goods exports are reported by the carrier; road groupage to the US and ocean sailings from the east and west coasts are both routine. Video surveys are standard nationally; in-home surveys in major metros. The corridor covers roughly 3,231 nautical miles.