Hydrodec director stocks up, and it's another purchase for Tesco

A round-up of the biggest director deals today so far.

Andrew Black, a non-executive director of Hydrodec, the "clean" oil re-refining group, has topped up his stake in the firm with a £26,500 purchase of shares.

The transaction came just four days after the company announced that revenues for 2011 will come in significantly ahead of 2010.

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