Dear Graham, Further to Tony's v.helpful email/info. (you have been a busy bee Tony!), you could also ask the NLW if they have these partic. MJ's... thus kill two birds with one stone so to speak! They have quite a good range of MJ's, but it would be worth ringing them beforehand to find out what they do have. I happened to pass that way the other weekend, and, viewing from the other side of the valley, it made me think that aerial p.graphs. could also be useful in your quest - as early as possible in date (again, the NLW might be able to help in this). Regards, Bernard