Krissy, it should have come with your Bentley.... See if the chauffeur put it in the glove compartment or maybe gave it to the butler. If not, then you can get it at a dealership that sells British cars. I made them throw that & some leather cleaner in the deal when I bought my car, but now I'm on my second jar of it, for which I had to cough up my own bux.
It's odd stuff. It tends to separate, so you have to stir it constantly while you're using it. It looks like it has lanolin or something similar in it. It doesn't have the kind of aroma that Glade is going to make into a candle any time soon, but it's not bad, either. It makes the car smell like leather again.
I used it on my tan seats with no problem, so I then had the 
to use it on DH's black seats. Well...white cream schmeared on a black seat....what an obvious mess all those swirls made. I thought for sure I'd be in the dog house if I couldn't get it all off. Then I got a phone call so I went into the house & forgot about the Hide Cream for about half an hour. When I got back outside, it had ALL sunk into the leather & had disappeared! 
I use it when the weather's warm & the leather's warm -- it sinks in better. And gosh -- it leaves your hands nice & soft, too! 