A survey of book sales and donations at Oxfam's shops across the UK reveals that Scottish author Ian Rankin is the biggest seller of books at Oxfam shops.

The survey reveals the biggest names in donated fiction in the first-ever secondhand high street bestseller chart.

Whilst the Inspector Rebus creator sells the most books, Da Vinci Code author Dan Brown's books are the most donated. Ian Rankin is number three in donations of books to Oxfam shops.

Oxfam's recent nationwide book festival, Bookfest, has seen donations of books to the charity shop network rise by 40 per cent so far, with book sales also dramatically increasing due to massive public response to the festival.

The festival ran from 4 to 18 July, and featured more than 250 events nationwide - Click Here for more information.

On being the Oxfam shop bestseller, Ian Rankin said:

"It's always good for an author to know that their books are popular. With Oxfam, it's also heartening to realise that each book donated and bought is helping such a worthwhile organisation."

John Connolly, Oxfam Bookshop Manager added,

"It is great to see a Scottish author as the top of Oxfam's best seller list. Ian Rankin is very popular with Oxfam customers and it is nice to think that Inspector Rebus is helping Oxfam projects around the world due to his popularity with the reading public."

The Oxfam shop bestseller list is:

1. Ian Rankin
2. Dan Brown
3. Bernard Cornwell
4. Stephanie Meyer
5. Terry Pratchett
6. Khaled Hosseini
7. Helen Fielding
8. Margaret Attwood
9. James Patterson
10. Jodi Picoult

The most donated authors to Oxfam shops are:

1. Dan Brown
2. John Grisham
3. Ian Rankin
4. Danielle Steel
5. Helen Fielding
6. Stephen King
7. JK Rowling
8. Catherine Cookson
9. Patricia Cornwell
10. Mills & Boon