i too saw her on itv2. i love the dress/shirt combo she wore. though i had a feeling her boots may have been her jonathan kelsey pair rather than the chanel; they came up higher on her ankle and there were no slits at the side!
i wasn't such a fan of the purple dress she wore in the interview with paul simon, plus im not a fan of the shoes, but each to their own ey!
on the wedges front, i thought they may have been the charles anastase pair but if you google them and get a side view, they are much higher a wedge than its appears she is wearing at wireless, leading me to assume it is maje. plus, if you look at the number or patterning of the metal pins that hold the straps, they are different from the charles anastase pair.