I applied to Warwick for the Mathematics course on around 10-15 of October and I received an offer about 2 weeks later. However it was before I took the MAT, and they say that if you take the MAT and do well you may be eligible for a reduced offer. When registering for MAT, I did enter Warwick as well. In the offer I received, they didn't mention anything about the MAT.
... and the ones that won't