The best file to send to us is a Print Ready PDF*.
A list of other files that we accept:
Flattened Photoshop (must be 300dpi)
Flattened Tiffs (must be 300dpi)
JPGs (must be 300dpi)
PNGs (must be 300dpi)
Files that we accept that are not print ready will incur a small conversion charge of £3.50:
We proof back as a PDF files sent to us in Word, Powerpoint and Publisher.
* We recommend saving your PDF as a PDF/X1a with a compatibility setting of 1.3