London is holding a two minutes silence at 11.55pm tonight. For residents of the UK you can send your donations into
www.dec.org.uk They are representing several charities including Save the Children, The Red Cross and Oxfam and they will give the money out to each organisation depending on which ones need the most money. It's a good idea if you don't have much to donate and don't know which organisation to give it to. Otherwise most high street banks are taking in donations as well as several online retailers like Amazon (on behalf of the Red Cross) and PayPal (on behalf of UNICEF)