someone will contact you soon prob the morning. they will also do a poster for you and the helpers in your area to print off and post as far as possible.
there was a dog missing last week from Leasowe and taken to Seacombe. I, and several others in the area posted the dogs picture up from wallasey village to seacombe ferry and the dog was returned because of the posters, so they do work.
this is the dog from last week http://www.doglost.co.uk/dog_blog.php?dogId=24467
Good luck and hope Jack gets home to you very soon.