Of course, seeing as I lack the FATHER-BOTHER merger I don't have to worry about my /l/-less "balm"'s sounding anything like "bomb".
balm: [b6:m] (i.e. RP /bA:m/)
bomb: [bOm] (i.e. RP /bQm/)
balm: [b6:m] (i.e. RP /bA:m/)
bomb: [bOm] (i.e. RP /bQm/)