There are almost a third more coronavirus cases in Cornwall than a week ago.

This is the news from the latest update of the government's cluster map.

This shows cases in the seven days leading up to last Friday, December 18, with the most recent five days left off due to incomplete data not reflecting the true number of cases.

The sharp rise has led to today's announcement that Cornwall is being placed under Tier 2 restrictions as of Boxing Day (December 26), following concerns over a new variant of the virus spreading across the country.

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Earlier Mr Hancock said action was needed in the south west where there were "early signs of the new variant and where cases are rising."

He added: "Even though case numbers are not as high as in other areas, the direction is clear."

This is also the picture on the updated cluster map for Cornwall, where there has been 402 cases recorded over the seven-day period up to last Friday.

This is 151 extra cases since Saturday's total of 251 cases and 253 extra cases from a week ago, when there were 148 cases showing. 

The number of cluster areas showing cases has also risen, to 58.

This is 18 more clusters since Saturday and an extra 38 on top of what was showing a week ago.

Clusters are only shown when there are at least three confirmed results, with anywhere having between zero and two cases showing white in order to "protect the privacy of individuals and prevent disclosure."

A large expanse of west and mid Cornwall is now recording cases, although one area to drop off from the map since the weekend is Helston.

The two areas with the largest numbers of cases in Cornwall right now are Callington & Pensilva, where there are 39 cases at a rolling rate of 467.2 cases per 100,000 people, and Gunnislake & Calstock, where are 38 cases and a rolling rate of 588.6 cases per 100,000 - with both rates well above the average for England.

The current overall rate of cases for Cornwall as a whole is 70.3 cases per 100,000 people, which is still below the national average.

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The map shows positive cases by 'Middle Super Output Area' - the name the government gives to the break-up of larger towns and groups of neighbouring towns and villages, with groupings covering a greater area than others.

The minimum population in each area is 5,000 and the average is 7,200.

Falmouth Packet: The latest Covid case clusters in CornwallThe latest Covid case clusters in Cornwall

The latest Covid case clusters in Cornwall

Case clusters now showing on the map are:

St Just & Land's End

Total cases: 5

Penzance North

Total cases: 8

Penzance Quay

Total cases: 7

Towednack, Lelant & Carbis Bay

Total cases: 5

St Ives & Halsetown

Total cases: 7

Hayle

Total cases: 7

Marazion, St Erth & Gwinear Gwithian

Total cases: 6

Porthleven, Breage & Praa Sands

Total cases: 6

The Lizard

Total cases: 7

Crowan, Wendron & Stithians

Total cases: 3

Ponsanooth, Mabe Burnthouse & Constantine

Total cases: 12

Falmouth West & South

Total cases: 3

Falmouth East

Total cases: 4

Penryn

Total cases: 3

Mylor Bridge & Frogpool

Total cases: 6

Camborne South

Total cases: 3

Camborne East

Total cases: 5

Pool & Illogan Highway

Total cases: 3

Illogan & Portreath

Total cases: 5

Redruth South

Total cases: 3

St Agnes & Mount Hawke

Total cases: 13

Shortlanesend, Chacewater & Carnon Downs

Total cases: 3

Truro West

Total cases: 3

Truro South & Central

Total cases: 4

Truro East

Total cases: 3

Probus & Roseland

Total cases: 6

Mevagissey & Polgooth

Total cases: 3

St Austell Central

Total cases: 8

St Austell East & Carlyon Bay

Total cases: 15

St Austell North & Carclaze

Total cases: 8

Trewoon, Coombe & Foxhole

Total cases: 3

Newquay West

Total cases: 4

Newquay East

Total cases: 8

St Columb Minor & Porth

Total cases: 6

St Columb Major & St Mawgan

Total cases: 4

Padstow & St Issey

Total cases: 3

Trebetherick & Whitecross

Total cases: 5

Bodmin West

Total cases: 3

Bodmin East

Total cases: 6

Lostwithiel & Penwithick

Total cases: 7

Tywardreath & Fowey

Total cases: 6

Lanreath, Pelynt & Polruan

Total cases: 4

Dobwalls, Addington & Menheniot

Total cases: 6

Liskeard

Total cases: 3

St Germans & St Mellion

Total cases: 6

Kingsand, Antony & Maryfield

Total cases: 4

Torpoint

Total cases: 3

Saltash Town & Pillmere

Total cases: 4

Mid Saltash

Total cases: 8

Saltash Latchbrook & St Stephens

Total cases: 3

Callington & Pensilva

Total cases: 39

Gunnislake & Calstock

Total cases: 38

St Neot & St Cleer

Total cases: 4

Altarnun & Stoke Climsland

Total cases: 4

Launceston

Total cases: 6

Camelford & Tresmeer

Total cases: 7

Poundstock & Kilkhampton

Total cases: 4

Bude & Stratton

Total cases: 9