The DEC Pakistan Floods Appeal has now reached £47 million, Disasters Emergency Committee chief Brendan Paddy has announced.
The NGOs involved say that as global media attention migrates elsewhere, continued relief and longer term development assistance for those effected by the monsoon remains vital.
Just as important is continuing pressure on national governments and international institutions to fulfil their pledges in the immediate aftermath of the disaster.
The Disasters Emergency Committee was formed in 1963 and is an umbrella organisation for 13 humanitarian aid agencies in the UK.
It members are Action Aid, Age UK, British Red Cross, CAFOD, CARE International UK, Christian Aid, Concern Worldwide, Islamic Relief, Merlin, Oxfam, Save the Children, Tearfund and World Vision.
The Pakistan Floods have been described as the greatest humanitarian disaster in living memory. An area the size of England is flooded and estimates currently put the number of people affected at around 20 million.
Around 8 million remain in desperate and urgent need of assistance, and with homes and livelihoods swept away, development agencies say they will need more help in the months to come.
To make a donation to the DEC Pakistan appeal call the 24 hour hotline on 0370 60 60 900, visit http://www.dec.org.uk or donate over the counter at any post office or high street bank, or send a cheque. You can also donate £5 by texting the word GIVE to 70707