"GP practice refused to register newborn daughter and myself"

I gave birth one week ago to an early term baby by emergency c-section after 96 hours of labour. 

Having arrived home after seven days in hospital, my mother in law went to our local GP practice to ask for registration forms for myself and my newborn daughter only to be told they are not taking on new patients at the moment. 

I do not drive and given the surgery I have just had cannot make a longer journey to a GP practice further away. This practice is a few streets away from me and walking distance to take my baby to in case of illness or concern. I am otherwise a very healthy person so feel that an extra body would not clog their books up. 

My partner works far from home so if either of us were to take unwell and need to be seen by a GP we would be unable to get there promptly. 

Is the register closed at the moment or is there any leeway? I have been told they must inform us if the register is closed and if they haven’t then they must allow us to register there as soon as possible.