The Cabinet Office has urged supporters and beneficiaries of volunteer groups to make nominations for the Queen’s Award for Voluntary Service.
Nominations for the award, which was created in 2002 to celebrate the anniversary of the Queen's coronation, must be made by 30 September.
The award recognises the outstanding contributions of volunteer groups to their local communities. Regarded as an MBE for volunteer groups, the award was granted to 117 organisations last year.
To be considered for the award, volunteer groups must have at least two members and should have been running for a minimum of three years.
The group should provide a locally run service and meet an identifiable need for people living in the local community. Their work should be supported, recognised and respected by that local community and the people who benefit from it.
The winners are announced on 2 June every year – the anniversary of the Queen’s coronation.
The awards are presented at ceremonies throughout the UK on behalf of the Queen by the local Lord-Lieutenant or Lieutenant-Governor.
Group representatives may also be invited to one of the royal garden party events next summer.
Martyn Lewis, chair of the awards committee and chair of the National Council for Voluntary Organisations, said: "At grass-roots level in communities across the land, there are millions of citizens identifying and tackling issues and problems that affect our society in all kinds of ways.
"They are the finest examples of democracy in action, giving selflessly of time and effort to make our country better for everyone."