Is it true that S&M only accept students from Russell Group universities? As I have the A-level requirements and the grades. But unsure on whether they accept people from non-Russell?
I think, as with many other 'top' city firms, there is a lower representation of Non-RG Universities. However, I recall meeting a trainee from Hull University.
I don't think any firm has a blanket policy to preclude certain backgrounds, or otherwise. Although,
Slaughter and May (at least in the 2017-18 cycle) have explicitly asked in some interviews "why" a candidate did not study in Oxbridge. However, clearly they recruit from other universities.
I'd encourage you to prepare for certain questions surrounding your university choice as a pre-caution. This applies to any firm, but perhaps more so for
Slaughter and May.