Damnnn this is tight! Grime Time sounded underground, catchy and sounds hella professional. It's hard-hitting and I could totally see Opta or someone collaborating with you to throw some lyrics on it. It's a little like the beat in N*s in Paris when he's saying "dont let me get in my zone."
And That NewOldSchool reminded me a little of one of my favorite beats, Honeycut's track The Day I Turned To Glass. It has that same kind of suspense, an action movie feel haha. The little guitar chords (the riff that repeats from 1:10 onward, it has kind of a Ghajini feel to it hahaha) you threw in during the 2nd half def spiced it up. Keep it up man, def looking forward to hearing more. You can make fresh sounds by mixing yes, but it's so much more fresh when you make your own beats, so I'm stoked you're getting back into this.