hey , i got in touch with the RCN (royal college of nursing) and they said 'The Nursing and Midwifery Council confirms that this should not normally exclude you from a nursing course, however the final decision would be down to the individual institution that you apply to. You would need to declare your colourblindness in the relevant section of the application form and the decision would be taken by the institution. Having said that, I would doubt very much that you would be turned down on that basis. Im happy