Very, very short notice (I only found out about it this morning via this link a mate posted on Facebook
From the organiser's press release:
"The protest is taking place outside the Emmanuel Centre, 9-23 Marsham Street, London SW1P 3DW on 25 April 2009 between 13:00 - 15:00
Rates of Mental Health problems in the LGBT community (particularly in young gay males) are much higher than in the wider community
All major medical associations in the US and the UK have been clearly stating for at least two decades that homosexuality is not a disease and that it can therefore not be cured.
A few weeks ago, the Wellcome Trust published the results of research showing that a significant minority of psychiatrists and therapists are still attempting to help LGB clients become heterosexual despite a total lack of evidence that such treatment is beneficial or even safe. Whilst the ex-gay movement is alarming large in the US, it is shocking to see that this hatred has spread to the UK."
A link to the Google map
I'll be there. :)