For me, for elite jobs in banking, finance and management consultancy, it's top 6 of bust. Warwick is well within the top 6. It competes with the likes of Oxbridge and the 3 London powerhouse unis. Together, they're peers as how the top employers would see them. King's isn't in the elite group. And for the top employers, it's either you're in the top 6 or bust.
Again, I'm talking about the elite employers.
The story would be different if we're talking about middle/average caliber employers, where I think King's is considered respected. But for say, Goldman Sachs and such, Warwick = Lamborghini and King's is synonymous to Kia.
No pun intended.