I am the same, for the past 50 years! Ever since school made a big thing of me being overweight, "banning" me from the school tuck shop, etc., which just forced my eating underground (well in my case, getting friends to buy it and I ate in the school loos!). On my drive to/from work, I'd stop at petrol stations to buy crap and eat it on the move. I'd find "reasons" (excuses) to go out, say to the post office, to buy crap and eat it back at home. It was always "hidden" eating, I ate perfectly normally when family were around, i.e. usual meals, no binging etc.
First thing I did was to get a job closer to home so I wasn't on the road so much and didn't have any petrol stations between home and work. What a result! Broke the habit! Then I concentrated on not finding excuses to go out shopping on my own - I'd get "someone" to go with me, i.e. either OH or DS as I knew if I wasn't on my own, I wouldn't buy a load of crap to binge on.
I know it doesn't work for everyone, but for me, it was changing lifestyle so I had less opportunity to buy the crap in the first place. I've lost around 8 stones, but it's taken a long time, close to 20 years, so very slow. I still binge, but now it's maybe once a month rather than daily. I don't think you can fully cure yourself and stop yourself doing it, but, for me at least, removing the opportunity was the key.
But as other posters have said, help/support from the NHS was useless. I've got high blood pressure and Type 2 Diabetes, but a succession of GPs, diabetic nurses, dieticians, etc., can't come up with anything better than "eat more beans and pulses" or "try to use a bit of willpower and not eat so much" - doh! As for mental health support/counselling, I've asked and asked, but GPs have constantly told me that they won't refer for binge eating! Having said that, I did once have a diabetic nurse who actually seemed to try to be helpful, telling me binge eating was my "crutch" in the same way that others would drink or smoke or take drugs, and that virtually everyone had some kind of "crutch" - that really helped me put things into perspective and helped to stop me hating myself when I started to think of it as similar to smoking or boozing!