Peter Jones, William Franklyn or basically anyone who's ever narated the Hitch-Hiker's Guide to the Galaxy, yes that includes Stephen Fry.
But Peter Jones/William Franklyn in preference.
Imagine the voice who once said "far out in the uncharted back waters of the unfashionable end of the western spiral of the galaxy lies a small, unregarded yellow sun..."
Narating you going down to the chemist!
(Yes I remembered that line off the top of my head, and yes, chemists are also referenced in the naration, I did it deliberately).