Immobiliser for a P reg Ford Escort?

Someone has broken into my car and tried to hot wire it.The steering lock has stopped them but they have smashed the immobiliser on the ignition.When I turn my key all I get is constant flashing on the led on the dash.For me to fix I would need new immobiliser,chip and keys to fix which will cost too much.If i could just disable the immobiliser in the meantime so could get to work would really help.