The UK SIPP market has swollen by over half since 2007, according to Suffolk Life.
Investments in the pension wrapper now exceed £75bn, up over 50% on 2007, figures from Suffolk Life suggest.
The firm links the growth in SIPP assets partly to a recovery of the FTSE in 2009.
John Moret, marketing director at Suffolk Life, says: "If the economic recovery proves sustainable it is possible that the value of the SIPP market will exceed £100bn by the end of 2010 with the SIPP rapidly becoming the only form of individual private pension provision."
SIPPs remain a popular choice for investors despite a new pensions tax regime for high earners, rumours of other tax changes and an added regulatory burden with the FSA's focus on suitability of advice and SIPP operational issues, says Moret.
"In 2009 several new SIPP providers have joined the market with continued interest in workplace SIPPs and growing attention on the at and post retirement market where SIPPs are a key solution for many investors and their advisers," he says.
While an increase in mass market SIPPs has led the recent growth, Moret estimates the bespoke end of the market still dominates in terms of assets.
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