I am now drinking a Wit beer which i used Banana split at the low end of its range and it is a cracking beer , planning on brewing a Hefe next at the high end of the yeasts range ,and hopefully get a bit of banana etc, also it will be interesting comparing the two ester profiles ,
My recommendation for your bitter would be WHC Old English ,flocs cleanly ,crystal clear ,and at lower temps fairly neutral to let everything else shine .