OK, you've sold me on this ? loved all your comments and enthusiasm for getting your DS out there.
I don't know of anyone actually fitting a winch to the front end of a DS, I'm 90% sure you would need to add a big steel bull-bar to do it which would be a mistake in my opinion. That leaves 2 much more reasonable options:
The obvious one (which I have some limited experience of) is a hand winch - just google portable hand winch and you will find options (e.g.,
this one). A hand winch will allow you to winch from the front or the rear recovery point but you will definitely want a snatch block as well to reduce the load (and shackles, a tree sling, probably an extension strap, definitely heavy duty gloves). This would be the cheaper option and the more sensible one and it sounds like you won't need a land anchor.
The more interesting option would be to mount an electric winch on a tow-hitch cradle (e.g.,
this cradle) there are plenty of other options if you search. If you already have a hitch you may want to check what it's rated for (I think LR did a folding one that wasn't particularly heavy duty - just worth checking). By cradle mounting the winch you could keep it in the boot while you drive around and only attach it when needed, preserving the equipment and your departure angle, it may make synthetic rope a better option (longer, lighter) as it will be kept in good condition when not in use. I figure that you wouldn't need more than a 9000lb winch and could potentially go as low as 6000lb as with a rear mount you won't be pulling yourself up a slope (assuming you're unlikely to get bogged driving down a slope). Side pulls concern me a little for the chassis/hitch so a nice long rope should help reduce that. I'm not an electrician but even if you have a diesel you would at least want to upgrade your running battery as 2 mins of winching could wipe it out, at which point you could damage the battery or would at least need a jump start and may not have finished winching. Again, you would be better to speak to someone qualified about this but you could sit a big heavy duty leisure battery in the boot fully charged ready to use just for winching and have long, heavy duty cables to run to the running battery also, if needed. I'm 99% sure you couldn't power from the 12v outlet in the boot, I think the motor's current draw would be way too high without thick direct cables to keep the resistance low. I'm pretty sure you could get some leads installed with a 400A Anderson plug in the boot, or at the hitch, specifically for winching (or add them to a second battery you carry).
Down sides compared to a hand winch are cost, weight, electrical setup, and rear recovery only (which makes the most sense for something you're hoping not to need). Upsides compared to a front winch are cost, weight, everyday convenience (removal), and rear recovery. Either way, definitely speak to a local expert in winch usage and installation before investing any money in my harebrained ramblings.
The cost pretty quickly ramps up with electric and for a very occasional recovery the time lost with a hand winch is a small price to pay. I mostly drive on sand so it's not worth the consideration for me, except hypothetically for someone else ? Really interested to hear where you go with this idea
P.S., just get a single tyre deflator as it gives you more control than Stauns and is no time loss for low volume tyres like ours.