Premier Oil plc (LSE: PMO) is an independent British UK oil company with gas and oil interests in the UK, Asia and Africa.

It is devoted entirely to the 'upstream' sector of the industry - the exploitation of oil and gas - as opposed to the 'downstream' refining and retail sector.

It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.

The Company started trading in 1934 as the Caribbean Oil Company with the intention of pursuing oil and gas exploration and production activities in Trinidad.

It was first listed on the London Stock Exchange in 1936 as Premier (Trinidad) Oilfields.

Source: Wikipedia