I have signed a contract to start in school A and my last head from school B has not yet sent a reference. School A says that without a satisfactory reference from school B, they will withdraw the offer. Now, I am doing supply work , for the whole half term, in school C. My questions are: -Should I chase school B to send the reference and how? I believe that I had an ok relationship with the head but I decided to resign after a couple of "observations" and before I was put in a "plan". I did not ask for an agreed reference. -Could I contact school A and tell them I am working in another school and I can provide them with another referee? It will probably look bad.