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As you can see from this Met Office pressure map, there are two cold fronts running side by side and as of midnight their expected to be in the position outlined in this graphic. Winds blowing along these fronts out of the southwest will funnel mild, maritime air in ahead of theses front creating the instability for heavy rains and strong winds to push up from the southwest. These fronts both are associated with a deepening 957mb low, west, northwest of the British and Irish coast.
You can see why the forecast calls for strong winds and torrential rains through tonight and tomorrow as these two fronts and the low itself moves slowly east with the center of low pressure moving well north of mainland Britain. Despite the fact we will see strong winds likely from these, we here in southwest Scotland and across northwest England with the Lake District likely the bullseye for heaviest precipitation, it’s going to be the heavy rains and flooding that will be the headline maker here, whereas again by looking at the map above, just below the southerly cold front, the isobars are tighter and therefore south Wales, south and central England is likely to see the strongest winds, perhaps reacjing 70 mph in exposed spots along the English Channel coast and western Wales as well as the high ground. Exposed coasts of Scotland, Ireland and the high elevations may also see gusts towards 70 or even 80 mph from this system.