The clarinet course was excellent - I had a wonderful time! If you want to know more, the website has just been updated saying what went on there - you should be able to find it if you do a Google-search on Clarinet Summer School Liverpool.
I wrote a review of the course, which the organiser has included! I've been trying to click on the photos which are posted on the site, to enlarge them so that I can see them properly, but it's not working on my computer at the moment - but in the top photo I'm one of the ones leaning on the piano, in the middle, wearing a pink Tshirt with a cat on it if I remember rightly!
I do go to Boosey & Hawkes occasionally, by the way, but I prefer Chappell's because they are usually more likely to have all the things I need.
Oh, and sorry for the delay in replying - I only came back from holiday today!