There’s a Rudall Carte & Co. on E-bay. Serial number 7418, 57.5 cm, so I assume high pitch, Boehm type head, no slide, foot joint, pinned flat keys. Looks like a cylindrical bore, Location: Lewisham.
http://www.ebay.co.uk/itm/Antique-Wooden-Rudall-Carte-Co-London-Flute-Open-Hole-/191868798925?hash=item2cac4587cd:g:YykAAOSw2ENW7G1V