As it currently stands, there are no available MPL courses in Oxford for the rest of the year, and they're not certain whether they'll be getting them for early 2020 as a contract needs renewing. They mentioned that they had over-recruited cadets and now had to prioritise those still unplaced from June and early. I've been offered a spot in Madrid in either August or November, or Brussels in September (2019).
Whilst I would have preferred doing my ground school in Oxford, I'm just pleased to be offered the MPL at all! I also had a whitetail offer from L3 which I kept open until recently (as an insurance choice), but even they said go for the MPL as people would 'bite your arm off' for a spot.