[fragile as glass]

I'm speaking from personal experience of going IP to several different ED units in the UK and I think you would need to know what sort of people you want to treat in the future - i.e. children/adolescents or adults and then apply to the relevant units for 'work experience'. That would half your search margin. ED's may be your field but in this country children and adult units are run very differently and would give you very different experiences and in order to get the most out of your time in the UK you would want experiences that are relevant in your future field of work.