Put posters up on trees, lamposts, vets, local shops etc.
Phone all the vets in your local and surrounding areas. (Remember that sometimes car drivers will pick up an injured pet and take it to a vet on their route).
Contact local radio stations and ask them to put out an appeal.
Phone Police and notify them. Although they are no longer responsible for lost pets they may have received information.
Phone your local councils (and nearby ones) and notify them. Ask where lost pets are taken in their region and go and visit the kennels. Councils may not be very good with descriptions of dogs and confuse breeds. (We have situations where owners are told the animal hasn’t been found but they are in the kennels. Make sure yourselves).
The following is a list of local Council phone numbers who should record the loss and notify their dog wardens.