According to VGChartz XBO and PS4 have sold 275,000 unit in UK by the week ending 21 March 2015.
MVC said 350,000 PS4 and XBO sold in 2015 by end of March.
So, PS4 and XBO must sell other 75,000 unit in the other 2 week. According to VGChartz, PS4+XBO have sold nearly 30,000 last week...
Considering the probabily PS4 boost next week because BloodBorne, VGChartz will be off by maximum 15,000/10,000, or, by 3/4 %.
Good job ioi!