Hi Annie
This is Kathy - I am a Senior Policy Officer at BCNA.
I am not sure what arrangements, if any, are in place for women requiring breast cancer treatments while travelling overseas. I suggest your friend talks to her medical oncologist to see if he/she can arrange something for her or can suggest a way for her to access a Herceptin treatment in the UK.
I'd be interested to hear the outcome if you have a chance to let me know. You could email me at [email protected] or reply to this post.
All the best for your trip. I hope you both have a great time.
Kathy