Image on front page of report won't fit with page footer present

Image on front page of report won't fit with page footer present

I'm using Reporting Services with VS2010 The report must be exported to PDF.
The first page of the report has a full-sized A4 image (with multiple
colours right to the edges). Subsequent report pages have a footer with
page number etc.
I cannot get everything to fit properly. If I have a page footer, and
deselect show on front page, blank space is allowed for on the front page
so the image overruns.
I tried to use the image as the background on the report and on the body
but this just repeats the image on every page (even if I use clipped).
I also tried adding in the front page as a separately defined report.
I tried using a bottom strip of the image in the footer with a condition
for it being the first page - this worked almost but a thin empty strip
between the two pieces of the image (page one and the footer) shows when
exported to PDF
I tried removing the page footer and creating my own footer type text box
but then I can't use page numbers and there is also a variable number of
pages in the report.
Is there some way to achieve this? - To have a full A4 sized image on page
one and page footers on each subsequent pages.