Which UK organisations are doing what: where you can donate to in the UK

ActionAid - UK website does not mention at all, but Action Aid Guatemala has an email you can contact
Save the Children - relief effort is being coordinated in the US
Christian Aid - UK website encourages support for its emergency crisis fund
CAFOD - has a notice and a form to donate to this relief effort
SCIAF- Encouraging donations
Red Cross - relief effort is being coordinated in US, though it says the UK has donated £100,000
Oxfam - has news and a form to donate to this relief effort. Oxfam is warning of a potential food crisis in Guatemala in 2006
War on Want - does not mention Stan yet
World Emergency Relief - Calling for donations

You can also support Rights Action that works in Guatemala in their Emergency Relief Fund for Guatemala.

There is a moving video appeal online.

DFID - Does not have a single word on Hurricane Stan in its website
DEC- Disaster Emergency Committee does not mention Stan either

For a round up of NGO response to Hurricane Stan see AlertNet's summary
One World.Net also pulls together news on the response to Stan from across the UK NGOs.