By Inverglen
Middlesex,
United Kingdom 
Plant ID please. Little dainty bell flowers , dark pointed leaves ( top right in the picture ).Has appeared in amongst a mixed border. Should know the name but it escapes me.
18 Aug, 2012
Answers
following as of interest.
18 Aug, 2012
Physostegia. Yes that's it. Thanks Andy. Drc...the leaves at the front are Campanula Pritchards Variety.
18 Aug, 2012
Ah thats why I thought I should know them! as I have some. of both plants thanks Inverglen.
18 Aug, 2012
Could be Physostegia or obedient plantr
18 Aug, 2012