Aubergines need more warmth than can be provided by the normal English summer so I recommend a greenhouse for raising your Egg-plants, Solanum melongena or Aubergines as we know them.
Seed varieties from Thompson Morgan Cooking Aubergines Aubergines are in season from August until October Aubergine can be purple or white, or any shade in between. Traditional fat banana shape, as well as balls and even think stick-like aubergines all taste similar There are cooking details on Vegbox the BBC and other cooking sites