Leaders from 56 countries are attending the Commonwealth Heads of Government Meeting taking place in Samoa on Friday and Saturday.

Commonwealth leaders are expected to defy the UK and debate ways of securing reparations for historical slavery. At its height, Britain was the world's biggest slave-trading nation. Downing Street has said the issue is not on the agenda for the summit.

Reparatory justice for slavery can come in many forms, including financial reparations, debt relief, an official apology, educational programmes, building museums, economic support, and public health assistance.

In the run-up to the summit, there have been growing calls from Commonwealth leaders for the UK to apologise and make reparations.

Formally opening the summit on Friday, King Charles said that members of the Commonwealth "know and understand each other such that we can discuss the most challenging issues with openness and respect".