*Campaigners in Pussy Riot-style clothing will hand in 10,000-signature petition to Russian authorities on eve of Friday’s trial verdict

*Three ‘Pussy Riot’ look-alikes will wear trademark fluorescent clothes and balaclavas, with ‘Free Pussy Riot’ slogans on their outfits

On the eve of Friday’s verdict in the Pussy Riot case in Russia, Amnesty International UK campaigners will stage a photo-opportunity stunt outside the Russian embassy in London before handing in a 10,000-signature petition on the case to embassy officials.

The event - at 10am on Thursday - is part of Amnesty’s high-profile campaign on behalf of Maria Alekhina, Ekaterina Samutsevich and Nadezhda Tolokonnikova, who are accused of “hooliganism on the grounds of religious hatred” and face possible prison sentences of three years in jail if found guilty this week.

Amnesty considers the three Women's rights's rightss rights's rights's rights's rights to be prisoners of conscience, detained solely for the peaceful expression of their beliefs. The organisation is calling for their immediate release.

An Amnesty spokesperson will be available for interview on the case from the event.

Who: three ‘Pussy Riot’-style campaigners, plus spokesperson and other activists with campaign placards

What: photo- and interview opportunity, and petition hand-in

Where: 6-7 Kensington Palace Gardens, London W8 4QP (assembly at Notting Hill Gate / Bayswater Road end)

When: Thursday 16 August 2012 at 10am

Amnesty’s text action on behalf of the three Women's rights's rightss rights's rights's rights's rights is available at www.amnesty.org.uk/pussyriot