All of the information on this thread has been so helpful.
My Great Grandmother had been told that she was an orphan growing up and always knew that her parents weren't her own. She was never legally adopted as it wasn't required at that time. Thankfully, on the 1911 census her birth surname was on it so I was able to get her birth certificate. I found her real mum and a whole new family, she was no orphan at all. I have managed to even connect with another family member although cousins removed to myself via my research who told me that my "orphaned" Great Grandmother was never known about and that her mum was a spinster, not talked about and said to have been put in a mental asylum.
I purchased the death certificate of my great great grandmother and she did indeed die at Winterton House in 1957, 20yrs after her daughter had died in childbirth. So sad. I have hope of getting the notes on her from here and my Granddad, bless him wants to help. He is completely shocked at this turn of events in family history and even more so at finding he has a baby sister that was put up for adoption at 2 months old that he had never known about as he had only been young when his mum had died in 1937. We are both hoping to find this sister or at least a living relative or partner hopefully so fingers crossed.