BUZZ — UK's Big Yellow gains on report shareholder Irenic is pushing for co's sale
* British self-storage company Big Yellow Group up about 3% at 866p * FT reports activist investor Irenic Capital, which owns roughly 4% of Big Yellow, has engaged with the board for months regarding a potential sale of the UK self-storage company * Previously, activist investor Ancora, which owns more than 4% of BYG,