I know i'm not much of a forecaster, however, i have my own theory on what might happen over the next 24/48 hours, so here goes!! The LP in south England will be squeezed south into northern France and Holland, as this tracks slightly south and east, the LP over Denmark will be pushed north into Eastern Scotland, Angus/Fife/Edinburgh/Borders in particular. As this moves NE, the system over the Faroes will continue to track south then take a SE path, sliding across the country towards Edinburgh but will be blocked as it tracks south. The HP over the Atlantic wont manage to spread over the whole UK, it will squeeze into England and northern France as the LP dissipates. The LP over the NE will be pushed further East as the system over Faroes sinks south over the UK, followed by more cold air, this time mainly from the N/NW. I know this might be very far fetched but i can somehow see this happening!