Papua new Guinea (Joined on the 16th of September 1975)
Rwanda (Joined on the 29th of November 2009)
St Kitts and Nevis (Joined on the 19th of September 1983)
St Lucia (Joined on the 22nd of February 1979)
St Vincent and the Grenadines (Joined on the 27th of October 1979)
Samoa (Joined on the 28th of August 1970)
Seychelles (Joined on the 28th of June 1976)
Sierra Leone (Joined on the 27th of April1961)
Singapore (Joined on the 15th of October 1965)
Solomon Islands (Joined on the 7th of July 1978)
South Africa (Joined on the 11th December 1931 under the Statute of Westminster, they later withdrew their membership on the 31st of May 1961 and rejoined on the 1st of June 1994)
Sri Lanka (Joined on the 4th of February 1948)
Swaziland (Joined on the 6th of September 1968)
Tonga (Joined on the 4th of June 1970)
Trinidad and Tobago (Joined on the 31st of August 1962)
Tuvalu (Joined on the 1st of October 1978)
Uganda (Joined on the 9th of October 1962)
United Kingdom (Joined on the 11th December 1931 under the Statute of Westminster)
United Republic of Tanzania (Joined on the 9th of December 1961)
Vanuatu (Joined on the 30th of July 1980)
Currently there are 53 members of the Commonwealth of Nations since Gambia left in October 2013. The current members of the Commonwealth are as follows.
Commonwealth Countries A-M Commonwealth Countries N-Z (below)
Namibia (Joined on the 21st of March 1990)
Nauru (Joined on the 1st of November 1968)
New Zealand (Joined on the 11th December 1931 under the Statute of Westminster)
Nigeria (Joined on the 1st of October 1960, with membership suspended on the 11th of November 1995 - 29th of May 1999)
Pakistan (Joined on the 15th of October 1947, they later withdrew their membership on the 30th of January 1972 and rejoined on the 1st of October 1989)