Nearly one in three pension savers (28%) are worried about keeping track of their retirement savings, according to a new report.
Two in five pension savers have built up multiple pension pots whilst switching employers, according to the research from digital pension consolidator iSIPP.
Over 5.5m pension savers have three of more funds.
The research indicated that 980,000 Britons have five or more pension pots.
However, just four in ten of those surveyed said they always transfer or consolidate funds when they start a new job.
Savers were also in the dark about what form of pension fund they have. Almost one in five (19%) said they do not know if their pension savings are defined contribution, defined benefit, SIPP, or personal pension.
Hrishi Kulkarni, managing director at iSIPP, said: “It can be difficult to keep track of pensions when you move jobs, and the research makes it clear that millions of us fall into this category.
“Consolidating pensions gives clients better control and offers full oversight of pension fund performance enabling savers to make more informed decisions while also only having to deal with one pension provider on their retirement.”
Pension savers were most likely to have multiple pots in the East of England (44%), East Midlands (43%) and South West (44%).
The regions where savers were least likely to have multiple pension pots were Northern Ireland (24%), and Scotland (34%)
Savers in London were the most likely to worry they have pensions they have forgotten about, with 49% sharing this fear.
Savers in Wales and Northern Ireland were the least likely to be worried about having pensions they have forgotten about, with only one in five sharing this fear.
Opinium surveyed 2,000 UK adults over the age of 18 between 1 and 3 March on behalf of pension provider iSIPP.
iSIPP is part of iPensions Group.