What is the most aggressive English Opening variation?

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Ed24ward

I've been playing around with the english opening 1.c4 and I'm wondering what the most aggressive/sharp line is. 

Diakonia

Any opening can be agressive depending on what you and or your opponent do.

ilikewindmills
1.c4 Nf6 2.d4 c5 3.d5 b5 4. cxb5 a6 5. bxa6 (Benko Gambit Fully-Accepted)
kindaspongey

Various possibilities are discussed in The English: Move by Move by Steve Giddins (2012)

https://web.archive.org/web/20140627105428/http://www.chesscafe.com/text/hansen161.pdf