The National Institute for Economic and Social Research (NIESR) has warned the UK faces the weakest economic recovery since the First World War, as GDP remains well below its pre-recession high.
Invesco's John Greenwood has warned further QE in the UK is unlikely to lead to a rebound in economic growth as he said there was "no quick fix" to the country's economic woes.
The UK is heading for zero average GDP growth over the next five years, according to the chief strategist at Arbuthnot Securities.
The FTSE has opened trading in positive territory amid signs European policy makers are moving to stem the eurozone debt crisis.
European markets have fallen further into the red in mid-morning trading on the back of recessionary fears, with the FTSE 100 suffering triple-digit losses.
US jobs data provided some much needed respite for investors on Friday, after the latest figures beat estimates.
US markets have reversed earlier gains after manufacturing data raised further doubts about the strength of the economic recovery.
The FTSE has opened in negative territory after a gloomy assessment of the US economy pushed European shares lower.
The US economy grew at a worse than expected 1.8% in the first quarter, unchanged from April's first reading, the US Commerce Department has confirmed.