Sean,
Beau Desert, certainly, but Harlech? The only attractive thing about that course is the green fee.
I think a great many UK courses fall into this category, apart from the biggies, perhaps because they tend to be a little more 'odd' than normal. Conditioning is a little more uneven, for want of a better word, there tends to be a good solid colelction of holes, with perhaps one or two stars.
How about Formby? Despite the rather odd middle section, it has a certain charm about it. Much more than Birkdale.
Nairn? Apart from maybe the 3rd and 5th and perhaps one or two others I don;t know that there's any stunners there, but it's a pretty enjoyable course in a great location with some great greens.
Tenby? Again, maybe only one or two standout holes, and some quixotic conditioning, but still a lot of really neat, subtle stuff too.
I haven't played it yet, and I'm kicking myself for being in the vicinity and foregoing a round last year, but Ashridge up near Luton is supposed to be really good, yet apart from The Confidential Guide and a decades old AA Guide, I've never seen a mention of it. Could it be the ultimate sleeper in Britain?
I also think Whittington Heath is very much a better than sum of it's parts course. Not as good as Brora, but interesting and pretty, with a few good holes - 2,3,4 and a few on the back nine.