OK, sorry for neglecting this but I have been busy getting the brochure ready. I should just update everybody.
The printers were able to deal with the gaps in the centre spread titles caused by the crop marks.
So I am happy, and I'd like to thank everyone that has contributed to the thread. I'd also like to thank the Scribus Devs - what an awesome package - I did an editable pdf with it yesterday and everybody at work was impressed.
Thank you all.
Nick.