After working as an English teacher and then as an Anglican clergyman near Liverpool, UK, Peter and his wife Miranda moved to Portugal in 1983 to establish and run A Rocha, a global family of conservation organisations working together to live out God’s calling to care for creation ​and equip others to do likewise, and the first field study centre and bird observatory were established. In 1995, they moved to France, where they oversaw the establishment of two other centres while travelling to resource the growing movement of Christians active in nature conservation. Peter and Miranda returned to the UK in 2010.

The A Rocha story is told in Peter’s first two books: Under the Bright Wings and Kingfisher’s Fire. His 2017 book, Keeping Faith in Fundraising, raises questions about the nature of philanthropy and fundraising in contemporary culture.

In 2019, Peter, Miranda, and two colleagues were involved in a road accident while on a work trip in South Africa. Only Peter and the driver survived. He has spoken about life since in a short film. At the end of May 2020, Peter retired and continues to serve A Rocha in a voluntary capacity.

Throughout February, Peter is speaking across New Zealand.