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The solutions from 1 to 12 are all six-letter words ending with the letter N in the centre. Moving clockwise from 1, the letters in the other circle will spell out the name of a Conservative peer.

Fill in the white squares with the numbers 1 to 9.

Each horizontal block of squares must add up to the number in the shaded square to its left, and each vertical block must add up to the number in the shaded square above it.

No number may be used more than once in any one block.