Bank of England policymaker Martin Weale unexpectedly joined Andrew Sentance in voting for a quarter-point rate rise this month, minutes to the BoE's January Monetary Policy Committee meeting showed on Wednesday.
The minutes said the MPC explicitly considered the case for a rate rise in January, and that for some members this was a finely balanced decision.
"For most members, recent developments implied that the risks to inflation in the medium term had probably shifted upwards," the minutes said.
However, the MPC deliberations took place before policymakers knew that Britain's economy unexpectedly contracted by 0.5 percent in the last three months of 2010.
The MPC opted to keep rates on hold, citing downside risks to inflation from spare capacity, fiscal austerity, a potential jolt to exports from the eurozone crisis as well as tight credit conditions.
"Some members also noted that an increase in Bank Rate ... might be misinterpreted as a signal that the Committee would attempt to bring inflation back to target excessively rapidly, which could cause expectations of a relatively sharp tightening of monetary policy that could have a detrimental impact."
The MPC had access to an early estimate of December's 3.7 percent inflation reading but did not know about the scale of the impact on growth from December's harsh weather.
Their expectation was that the economy would grow roughly in line with trend in late 2010 and early 2011, despite snow in December and a rise in value added tax in January.
Adam Posen repeated his call for a 50 billion pound expansion of the central bank's quantitative easing program, though he noted that a sustained rise in commodity prices or weaker sterling could outweigh downward domestic price pressures.
Other members of the MPC saw upside risks to inflation from commodity prices, strong growth in emerging markets that could push up the cost of imports and rising household inflation expectations.
The publication of the minutes came after BoE Governor Mervyn King said on Tuesday that he expected inflation to rise towards 5 percent in the coming months, but that this alone was not enough to justify an immediate rise in interest rates.
He also said that the BoE could preserve its credibility if it explained its decisions well, and that large relative price shocks were an inevitable part of the economy's rebalancing.
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