The st george's logo above is the academic logo for the medical school.
The NHS logo above would have to sit with the new logo and therefore should not clash with it.
The corporate font for letters and website is Arial, although I think Arial is too cold for this design the graphics used should complement it.
The GOSHcharity.jpg is the most successful children's hospital logo in the UK recently featuring in the London 2012 opening ceremony, the challenge is to come up with something as effective as this.
The stock-vector-saint-george-with-dragon give s an image of St George fighting the dragon with his sword and defending himself with a shield
The logo 'from clipboard' is an example of a design that one of our competitors uses, it's not to my taste but it gives and example of what is currently used.
Virgin Care seem to use red in a health related logo quite effectively.
Could the cartoon of the knight I have uploaded be the inspiration for a design for St George, this could then form the main image for the logo?