FSA chief executive Hector Sants insists the regulator is considering the Treasury Select Committee's recommendations on the RDR, following an angry letter from TSC chairman Andrew Tyrie.
He wrote that he can "assure" the committee the FSA is "considering carefully" its recommendations.
In his letter to Sants yesterday, Tyrie said the speed with which the FSA dismissed the TSC's suggestions, which included to delay the RDR by one year, was "unacceptable".
Tyrie was critical of what he said was a "peremptory" response from the FSA after the TSC published its recommendations last weekend.
The FSA released an embargoed response to the TSC report, ruling out a delay to RDR implementation.
Tyrie wrote: "We deprecate the [FSA's] actions. It was precipitate, giving the impression that no adequate consideration had been given to the arguments for the delay we recommend."
However, replying today, Sants said it was "certainly not the intention of the FSA's [embargoed] statement to be seen as a peremptory rejection of any element of the committee's report".
"I can assure the committee that the FSA is considering carefully the recommendations in the report and will follow its usual practice of submitting a full response," he wrote.
"This will take some weeks, but we would intend to submit it by the end of September."
Sants explained the reason for the swift initial response was to "ensure that the momentum behind the preparations for the RDR is not lost".
He added: "Prior to responding to the committee's recommendations we will, of course, continue to consider carefully whether further mitigating actions, in addition to those already agreed, are necessary to address your concerns that firms or firms will be unable, despite their best endeavours, to meet the deadline.
"For example, we will be publishing guidelines on eligibility for waivers from the qualifications requirements."
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First mentioned in Cridland Report
Second acquisition of 2019