It's fairly nailed on now that a low pressure system will lie to the south west in the coming days.
As regards to the coastal impact from wind along with the sequence of very high tides we have now entered, Sunday looks like a day for those who like to experience crashing waves along the seafront.
http://www.wetterzentrale.de/pics/Rtavn601.gif As the strongest winds will come from a south east direction, there are likely to be some unusual sights in areas that are normally sheltered from the prevailing wind. The south west of the country looks particularly "interesting" where the strongest winds will be and expect some local flooding along some coastal areas.
The Thames high tides may be a bit higher than forecast, what with low pressure in the vicinity, but also due to the wind having an easterly component and expect the barrier to be in operation. Locally for me, Sunday afternoon along Southend Seafront may experience some light flooding along the road around high tide. I would say all south facing coasts in the south should be aware of the sea state and conditions around their high tide.
The Severn Bore has just started a sequence of 4 star bores which continue to Sunday which should be a good watch or surf with low pressure close by.