Core CPI data jumped to 6.2%, while the Retail Price Index soared to 12.3%.
In addition, data from the Office for National Statistics showed the price of goods produced by UK factories climbed 17.1% this year.
Despite reporting big losses, AO World soared 9.6% after posting an upbeat guidance for the next year.
Made.com fell 10.0% after the online furniture retailer said it is looking at selling more shares to strengthen its balance sheet.
Things to read today:
Student makes $110mn trading meme stock favourite Bed Bath & Beyond (Financial Times)
Fed Officials See Need for Continued Interest-Rate Increases, but Less Certainty Over Destination (Wall Street Journal)