Obbo

Thing is, victim was under obbo. He'd done time. He was a nark.

Source: wiktionary

If we'd known about that two or three weeks ago, had him under obbo – assuming we could afford that – we could be looking at a serious result by now.

Source: wiktionary

That block popping, them bodies dropping like it’s nothing, them pigs watching […] My nitties always clucking for my food, cause they love it Got a bitch, yeah she swallows, my whole strip, that’s an obbo Them jakes, yeah they follow I got light, I got choco

Source: wiktionary

I step out, the CCTV clocks me / Under obbo like man shots keys

Source: wiktionary