I have used sigma's software to manage patient information during my work at University Hospital Birmingham NHS Foundation Trust for over two years now - it was great having such easy access to all patients' records from anywhere! The system runs perfectly well with no problems or issues when using this product daily across different sites within our trust (3rd party products are not allowed).
It allows me as one member of staff working remotely easily access every single record associated with each individual who comes through A&E / ED.