high risk payment processing

I am looking for one or more payment processors for my businesses. After I have read a lot here on the forum over the last year, I thought I would try my hand at the businesses where there is a lot of money to be made but which are also really difficult to set up, especially when it comes to...

I have read the guide in mentor group gold on how to setup a company in the UK and setup payment gateway and apply for merchant account. Works well with semi high risk business for me. If I want to enter into some more shady crap like pharmacy, porn, gambling and content considered high risk...

I would like to know your thoughts, if you could not choose PayPal as a payment method, your business is considered high risk, what alternatives would you choose? I have looked into a few, but reading stories about almost every alternative I find, like Skrill, 2co, PaySafe, Nochex and more...