An Edinburgh novelist and a Dundee poet have won two of the main prizes in the Costa Book Awards.

Kate Atkinson has won the 2015 Costa Novel Award for her wartime drama A God in Ruins, which the award organisers say explores "not only the dizzying concept of multiple possibilities but the painful reality of a life quietly lived".

Ms Atkinson also won the Whitbread Book of the Year Award in 1995 with her first novel Behind the Scenes at the Museum.

Her best-selling novels featuring former detective Jackson Brodie were televised by the BBC in the series Case Histories starring Jason Isaacs.

Her previous novel Life After Life was the winner of the 2013 Costa Novel Award and the South Bank Sky Arts Literature Prize and was also voted Book of the Year for both the UK and the US Booksellers Associations.

The judges described Ms Atkinson's book as "utterly magnificent and in a class of its own."

Dundonian Don Paterson, who is currently the only poet to have won the TS Eliot Prize twice, won the 2015 Costa Poetry Award for his collection 40 Sonnets.

The award organisers said that while some of his poems take a traditional form, others are "highly experimental" and display a "cool intelligence and lyric gift that has been the hallmark of Paterson's work since his first book, Nil Nil, in 1993".

Paterson previously won the Whitbread Poetry Award in 2003, the Geoffrey Faber Memorial Prize and all three Forward Prizes. He was also awarded the Queen's Gold Medal for Poetry in 2009.

He works as Professor of Poetry at St Andrews University and is also a jazz musician and composer.

The judges said: "A tour de force by a poet at the height of his powers, these poems buzz with life and intelligence. The stand-out collection of the year."

The five Costa Award winners each receive £5000 and were selected from 638 entries.

All five will now go head to head for the top prize of Costa Book of the Year. The winner will be announced on January 26.

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