Cathal Crowe (Clare, Fianna Fail) | Oireachtas source

Within IAG and Aer Lingus, are any slots pinned down to a specific route? I know the Shannon route is because of an agreement with the Government. Do IAG or Aer Lingus have ring-fenced, dedicated and committed slots at Heathrow that they do not deviate from? I refer to Dublin, for example.