Are you predicted AAA? I will go with J-SP and that it won't matter to recruiters; but you're probably gonna be less exposed to top firms and commercially minded students at Lanc relative especially to Notts. A lot of students' momentum to apply to open days, vacs, photography competitions and so on come from their peers. If you think you're self-motivated, this is less of a factor.
So go with Lanc if you like the scene. Do consider the difference in academic rigour, especially between Lanc and Notts. Law is taught largely the same, but the approach in terms of depth ain't the same. Even between quite "close" unis.