Liabilities of defined benefit (DB) schemes have increased markedly according to the Pension Protection Fund's (PPF) 7800 Index.
The figures showed total liabilities hit £1,747bn by the end of June. This compares to £1,590.4bn in May.
The funding ratio of 5,945 schemes also worsened from 81.5% to 78.0% by the end of June.
It is also estimates deficits increased from £294.6bn to £383.6bn over a month calculated on an s179 basis.
This is an increase of £89bn since the end of May and raises concerns about the health of the country's DB schemes.
"The UK's gold-plated pension system is starting to look tarnished. Deficits are soaring, employers are reneging on their promises and still more money is needed," said Hargreaves Lansdown head of retirement Tom McPhail.
Companies diverting profits into schemes mean there is less investment to help businesses grow and less money available for the pensions of younger workers, he added.
McPhail (pictured above) cites figures from the Office for National Statistics which says the average total contribution rate for DB schemes was 20.9% of pensionable earnings, 5.2% for members and 15.8% for employers.
For defined contribution schemes, the average total contribution rate was 4.7%, 1.8% for members and 2.9% for employers
Such pension commitments combined with weakness in the UK economy due to Brexit could undermine sponsors.
"A significant slowdown in UK growth and material likelihood of a recession next year could threaten the financial outlook of pension scheme sponsors," said BlackRock head of strategic clients Andy Tunningley.
"If scheme sponsors are less able to increase future scheme contributions due to financial strain, pension scheme asset risk should be reduced."
The PPF 7800 Index reports there are 4,995 schemes in deficit and 950 schemes in surplus.
Nearly every trustee is confident of the next stage in their scheme’s strategy, despite almost an equal number being forced to consider replacing plans within the prior 12 months, according to research by Barnett Waddingham.
Companies could be overstating their pension liabilities by up to £60bn due to their life expectancy assumptions, according to XPS Pensions Group.
Defined benefit (DB) schemes that provide GMPs must revisit and, where necessary, top-up historic cash equivalent transfer values (CETVs) that have been calculated on an unequal basis, a landmark court judgment said last week.
Regulators must act now to impose some "proper regulation" to stop another defined benefit (DB) transfer advice disaster, saysTim Sargisson.
Opportunities for defined benefit (DB) schemes to pursue investment approaches that help repair the UK’s economy cannot stand in the way of improving member outcomes, Aegon says.