From the Alberti website:
We are a group of pianists, mostly amateurs, who meet in central Manchester every fortnight to play and listen to each other playing.
The group has been going for over 30 years. Its aims are simply to share the enjoyment of playing the piano, and to encourage one another to improve and try new pieces.
More information found at: http://www.albertipianogroup.co.uk/index.html