Pat
Your best bet is to look for a trophy shop that does engraving. The other option is to look into local woodworking clubs to see if anyone has a laser.
Try mrcook4570 here on the forums. He's engraved a couple of pens for me, (both with a silver colorfill), and they both turned out great. Also engraved some boxes for me. Not sure what shipping is to your side of the pond though.