"It is our duty to help the Bank of England in their mission to return inflation to target by acting responsibly with the nation’s finances," he said in a statement.
Analysts said the jump maintained pressure on the BoE to keep on raising interest rates.
"These numbers sit uncomfortably alongside the message sent from the Bank of England ... when it argued that only modestly higher interest rates would be necessary to bring inflation back towards its 2 per cent target," Mike Bell, global market strategist at JP Morgan Asset Management, said. "We are not so convinced."
Inflationary pressures from Britain's tight labour market had been under-estimated and workers were likely to ask for more pay going forward to offset inflation, Bell said, predicting the BoE would raise rates to a peak of 4.5 per cent from 3.0 per cent now.
The BoE had predicted inflation of 10.9 per cent in October in forecasts published this month.
James Smith, an economist at ING, said there were signs inflation was peaking and he expected Bank Rate to top out at around 4 per cent, slightly below markets' current pricing.
Poorest suffering most
Hurting those on the lowest incomes the most, 12 months to October prices of food and non-alcoholic beverages rose at the fastest rate since 1977, the ONS said.
Unlike the leap in the headline number, core inflation - which excludes food and energy and other volatile components - was unchanged at 6.5 per cent.
The lowest-income households, for whom energy and food take up a bigger share of spending, suffered an inflation rate of 11.9 per cent while top earners faced a 10.5 per cent rate, the ONS said.
Producer price data showed there was still inflation pressure in the pipeline but hinted at a possible slowdown.
Manufacturers' costs for raw materials and energy rose at their slowest pace since March but at 19.2 per cent the increase was still huge by historical standards.
Prices charged by factories rose by 14.8 per cent in the 12 months to October, the slowest increase since April.