I'll be visiting London next year with my in laws, of which my father-in-law is blind. Since London is basically just wandering around and looking at things, our trip could get very boring very quickly for him.
I know some museums might have interactive exhibits (like things that you can touch), or maybe free audioguides (not so important as we can read to him anyway + his English isn't spot on).
What museums have facilities for making things more interesting for blind visitors, and are there any other big sightseeing attractions that offer a more interactive experience for a blind person?