PS4: Over 100k for the first 2 weeks
XB1: 50k for the first 3 weeks
Presented without further comment other than to say that some of the estimates appear to be off, as we know that the PS4 sold 250,000 units in its first 48 hours in the UK. But the overarching theme that the PS4 is selling stronger than the One is the take-away and not a surprise to anyone, I don't think.
If I recall correctly, the UK was the Xbox's strongest European country in terms of hardware sales and competitiveness with the PlayStation brand. They'll want to pick up the pace there at least. Otherwise, how does MS pick up steam in Western Europe? Starting out being outsold almost 2:1 is not what they hoped for, I don't think.