Many thanks Philip - that's very helpful.

I've been trying for some time to get hold of a copy of the Observer's
Handbook but it still appears to be out of print whenever I look -
unless I'm looking in the wrong place! I presume that no-one has any
news of a reprint possibly or any sort of online availability?

(I did see something the other day about a new print-to-order service
that may become available in certain bookshops IIRC for individual
copies of an otherwise out-of-print title - at a price of course but
provided it was not too extortionate then it might be an attractive
option.Too much to hope I guess that the Handbook might become one of
the titles on offer.)

JGD