Derek was born in Hampshire in England but spent his teenage years in Auckland, New Zealand, where he still has strong family ties.
For many years he taught history in a secondary school but took early retirement to concentrate on writing. Apart from his writing, he spends his time gardening, travelling, walking and taking part in archaeological digs at a Roman villa.
Derek is interested in a wide range of historical themes but his particular favourite is the late medieval period. He writes action-packed fiction which is rooted in accurate history.
His debut historical novel, Feud, is set in the period of the Wars of the Roses and is the first of a series entitled Rebels & Brothers which follows the fortunes of the fictional Elder family.
The fourth and final book of the series, The Last Shroud, was published in the summer of 2015.