The automated feedback was starting with "By way of support, we are delighted to share the attached personalised feedback report...".
First time a law firm sent me an email with a "delighted" in it. I will not bother them even if it takes them 3 months to PFO me.
Jokes aside, I completed my tests on January 29. I guess a kind email wouldn't hurt in your case, and it is justified.
Hey, I attended their Open Day (25th Jan) and they said they aimed to get back to people 2 weeks post-test feedback. Someone mentioned that they had received their test results in December and not heard back yet, and Mark the Grad Rec guy looked surprised and said to drop him an email about it. I was in a similar situation so decided to email too the next day. I still haven't had a reply to that email, or a response to my app.
So I reckon they are just swamped? A lot of people seem to have been waiting ages after their phone interviews too, so would make sense.