Recently the LHCb collaboration has released a series of papers [1] [2] [3] [4] [5] [6] on Bd or Bs decays to J/ +X where X is a scalar or axial vector meson. This mechanism gives a potentially clean flavour filtering. Production in Bs ? J/ + X(s¯s) occurs at leading order and the Bd ? J/ + X(d ¯ d) is the dominant entree to the accompanying meson X, though Cabibbo suppressed. Thus Bs gives an amplitude proportional to the s¯s content of X, and the Bd decay gives amplitude proportional to its d ¯ d content. There is no direct way to probe the u¯u content by recoil against J/ , but decays of the charged B? ? J/ X? give information about the coupling to strange (Cabibbo leading) or isovector states (Cabibbo suppressed). LHCb has investigated the flavour content of X for both scalar mesons and for the f1(1285) by measurement of Bd,s ? J/ + X. The conclusions, prima facie, differ from those drawn from experiments at CERN by both WA102 (central production), GAMS and Crystal Barrel (proton antiproton annihilation at low momentum). Our interest was triggered by how similar some of the features observed in the LHCb data are to what was found in the 1990s. Our strategy is to adopt the conclusions from the aforementioned experiments and see if they are consistent with the LHCb data. We then identify specific further tests that may shed light on any outstanding issues.