Gale force winds have left 1,700 homes and businesses without power, mainly in the west of the country.
A tree also hit a double decker bus in Dorset yesterday, but the passengers and driver escaped unscathed. Part of a doubledecker bus in Poole, Dorset, was crushed by a felled trunk and a road in south Belfast was closed when a number of branches fell on the bonnet of a vehicle.
The strongest winds were likely to be on exposed coasts.
Members of the public look on as Storm Erik makes landfall with winds of up to 70mph to hit some areas of the United Kingdom along with heavy rain on February 8, 2019 in Prestwick, Scotland.
The Met Office has put a weather warning for wind in place covering most of the United Kingdom, with strong winds expecting in the south of Scotland, much of England, and Northern Ireland.
London North Eastern Railway said an 80mph speed restriction has been placed on trains between Leeds and York because of the wind, meaning journeys are being delayed.
Highways England said the A20 near Dover remains closed while a CCTV mast that had been seen swaying in the wind above the carriageway is repaired.
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Wind speeds are dropping across the country as Storm Erik moves off, eastwards, towards Wales and the British Midlands.
One lane was closed on the Severn Bridge between south Wales and south-west England due to the strong winds, and the A548 was closed in both directions around Mostyn, north Wales, because a tree fell across the carriageway.
Police are investigating whether high winds were to blame.
A slight frost is also possible in some parts with temperatures expected to drop as low as 0°C. A Cumbrian village, Shap, was expected to see the highest rainfall, of more than 5cm.
Although the wet and windy weather was expected to ease, further hard conditions were forecast.
However, it is thought the storm will largely clear on Sunday with conditions becoming more settled as the week progresses - but there could still be outbreaks of rain.
The heavy rain will then edge into Wales and the north-east England overnight, and there could even be a chance of snow in high areas in the south overnight.