About a hundred protesters shouted their opposition to the Pakistani president’s UK visit as he addressed a rally in Birmingham.
They are angry that President Zardari has gone ahead with his trip while millions are struggling to cope with devastating floods at home.
The city has a large Pakistani community and the president told hundreds of supporters inside the venue that he was there to promote his country and boost trade.
In Pakistan more heavy rain is hampering efforts to help those stranded by the flooding.
In the south which is on red alert, about a million people have been moved from their homes and put up in temporary shelters.
At least two more days of rain are expected in Sindh province. In the northwest, helicopter aid flights have been grounded because of the weather.
Many countries have responded to Pakistan’s cry for help. NATO has set up a special unit at its Brussels headquarters to organise the transport of supplies from its member states.