The yellow ones are loostrife I think and the blue ones are some form of campanula - don't know which one but someone else will.

Thanks Cammomile, they always flower at this time (together) and last year I had been meant to split and move some to the new border but as I didn't know what they were I left them.

The yellow one looks like Lysimachia ciliata and the Campanula looks like one called Loddon anna.

Thanks Owdboggy.

I have the loosestrife in my garden and really love them. I have been digging them up and moving to other areas of our yard. Thanks to you I'm going to get the campanula to put next to it. They look beautiful together. Thanks for the good idea.