Memorial for 7 July bomb victim

Mr Hart was a key supporter of the Solidarity movement in the 1980s

A human rights campaigner who was killed in the 7 July bombings in London has been honoured with a memorial at a park in west London.

Giles Hart, 55, from Hornchurch, east London, died when the No 30 bus he was on was blown up in Tavistock Square.

The stone, which describes Mr Hart as "a lifelong campaigner for freedom and human rights", in English and Polish was unveiled in Ravenscourt Park.

Fifty-two people died in the terrorist attacks on 7 July 2005.

'Fitting tribute'

Mr Hart was a key international supporter of the Solidarity movement, which helped to bring down communism in Poland, in the 1980s.

Poland's ambassador to Britain, Barbara Tuge-Erecinska, and the chairman of Solidarity, Janusz Sniadek, attended the unveiling.

Trades Union Congress (TUC) general secretary Brendan Barber said: "Giles Hart was a committed union member who spent years campaigning for trade union rights and basic human rights freedoms.

"This memorial is a fitting tribute to his life, cut tragically short by the terrorist attacks of July 7 2005."

The stone was imported from a quarry in Poland.