Posted: 12/03/2014 at 13:12
There is a wonderful lavender farm in Norfolk and they sell plugs of a great many varieties. Look them up on the web - they will be able to advise you, but can also offer varieties that are not available in the garden centres.
I grow "bunny ears" lavender in a hot, dry spot in France - it needs a very poor, stony soil - great of you intend to neglect it! However, if you want something taller there are many other varieties.