Thanks for the kind offer, Mervyn, and I think that you may have answered my question.
The handbook I bought from eBay was advertised as a 1969 edition, but is a January 1967 one, covering the early Mk 2 Series 1, which I guess yours will as well. As there are at least 3 versions of the Series one car handbook, I'm hoping that there must be at least one version of the Series 2 car, which is the one I'm looking for!
I'm on the case for a parts manual now, and it looks like the one manual covers all of the cars as per the Mk 1. Although knowing Ford, I'm sure that there are specific versions for the Lotus Cortina as well.
I do have the workshop manual, which I've had for many years. A proper original one with the fold-out diagrams. I may just get a repro one for the garage though.
Thanks again.....Mark