BBC reporters reflect on the Queen and the Commonwealth

Queen Elizabeth II becomes Britain's longest-reigning monarch later when she passes the record set by her great-great-grandmother Queen Victoria.

Princess Elizabeth became Queen while on an official visit to Kenya, while she was staying at the Treetops Hotel when her father, King George the 6th, died in 1952.

The BBC's Alastair Leithead has been back to Kenya. Shaimma Khallil remembers her Pakistan tour, Nick Davis is in Jamaica and Phil Mercer reports from Australia.