About 80 Royal Marines from Alpha Company are due to land at RAF Brize Norton at about 2pm. They'll then be transported to Norton Manor Camp near Taunton by coach, greeting friends and family at around 6pm.
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A weekend of bad weather is due to hit the South West from today (6 February). The Met Office and Environment Agency have issued warnings.
The young man who turned his bedroom into a bomb-making factory and then tested the devices in disused mine shafts.
The Atlantic Jet Stream brings a yellow warning to the South West. There's the prospect of heavy rain and strong winds on the way.