When can I shoot Canada geese?

Open/shooting seasons for wildfowl (ducks and geese) are listed below: –

WhereWhen
  Wildfowl in England, Wales and Scotland on the foreshore – Defined by the Wildlife and Countryside Act 1981 as “in or over any area below the high-water mark of ordinary spring tides”   *(excluding Isle of Man)      1 September – 20 February
  Wildfowl in England, Wales and Scotland inland – Defined by the Wildlife and Countryside Act 1981 as “anywhere above the high-water mark of an ordinary spring tide”   *(excluding Isle of Man)    1 September – 31 January
  Wildfowl in Northern Ireland anywhere    1 September – 31 January
  Isle of Man    1 July – 31 March