Only ones I am aware of are the big fugly ARB-style monstrosities, I do recall that there was "stealth" winch mount that kept the front looking the same but mounted the winch in such a way that the only thing visible was the fairlead. Can't remember if it was above or below the bumper. I go look for pcs.
From rangerovers.net:
Under-Bumper or "Hidden" Winch Mountings
A third option is the "hidden" mount style with the winch tucked beneath the factory bumper (see photo). For the Classic Range Rover, an economical 35 lb Ramsey hidden mounting kit was available for a while, accommodating the REP series of winches up to 8,000 lbs capacity. More expensive are kits incorporating a Warn 8,000 lb winch mounted in a welded steel box structure are still available through suppliers such as
Rovers North and
D.A.P. Enterprises. Designed to be covered by the large British-style license plate, these require a wide cutout in the airdam (through which they protrude) and some trimming of the bottom of the bumper. Total weight including winch is about 110 lbs. Similar in concept are the Range Rover under bumper winch kits from
Superwinch, for the X6 (6,000 lb light duty), X9 (9,000 lb medium duty), and Husky (8500 lb heavy duty) winches. (Photo: Custom under-bumper winch mount on author's Classic Range Rover)
Found one:
Tinkerer, Designer, Adventurer, Overlanding enthusiast.
www.terratorre.com
Guess you have to beat the guy up to get one made
And another:
Hidden Winch Mount (Tray)
www.roverware.us