Chaplains from different faiths, beliefs and denominations have offered support to the tens of thousands of people queuing to see the Queen lying-in-state at Westminster Hall.
The chaplain service started at 9am on Wednesday and will run until Sunday.
People hoping to see the Queen lying-in-state have been warned the queue could reach four and a half miles, which may be 30-hour wait.
Chaplains wearing Hi-Vis vests with the words "Faith Team" printed on them have been assigned to move along with the crowd during daylight hours.
The Church of England partnered with the Department for Digital, Culture, Media and Sport to provide the chaplaincy service.
The team of chaplains were recruited and commissioned by Lambeth Palace and the Dioceses of London and Southwark.
Mourners have the chance to file past the Queen and pay their respects in person 24-hours-a-day from Wednesday until 6:30am on Sunday in Westminster Hall.
