The Prime Minister today defended changes to the south's coastguard helicopter search and rescue service, saying they would improve average response times by 20%.
Dorset MP Richard Drax asked David Cameron to step in to save the Portland coastguard helicopter base, which is due to close by 2017.
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Police believe it is a "distinct possibility" that Halliwell was a serial killer, beyond the two murders he was convicted for.
Tuesday's weather for the west of the region
Tuesday's weather for the east of the region