You should seek help if you notice any:
If you are registered with the podiatry department, contact the Podiatry 'Single Point of Access' on 01623 404615 and explain that you have an urgent foot problem. They will ask for more information and may arrange for a podiatrist to call you back.
If you are currently not registered with the podiatry department, then it is important that you contact your GP surgery and explain that you have an urgent foot problem. They should arrange for someone to get in touch with you or offer an urgent appointment.
If you are unable to contact the Podiatry service or your GP surgery, then contact NHS 111, either by dialling 111 from your phone, or going to 111.nhs.uk. Explain that you have an urgent foot problem. They will ask for more information, and advise on what you need to do.