A PCS Union spokesman said:
The issues of the last few days has brought to the public's attention what we have said for a long time, that ministers can't cut staff and expect to run the same service - not just on passport controls at Heathrow, but right across UKBA.
Clearly, the cuts already made have had a major impact and further cuts planned every year until 2015 will make the situation even worse.
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Officers were called to Stoke Newington High Street were they found the road littered with items.
Dry and cloudy tonight. Breezy at times. Lows of 9C.
The Commons Environmental Audit Committee warned ministers not to approve the scheme unless the airport gives assurances about air quality.