My dog got out please help find him!

My dog escaped earlier today while my fiancé was walking him he slipped out of his leash and harness. I live over my wickham park hes been seen in the area, but we can't seem to ceatch hom or find him now. I really want my dog back im so heart broken right now please if anyone has him or finds him let me know! Yes he is chipped and he is very skittish and scares easy.