Lavender, Hebe, blue flowered salvias, Malva moschata, Cosmos, Echinacea, Foxglove as just a few. Avoid double flowered forms of plants, for instance, in dahlias, choose the open, daisy flowered type, not the ball type, and also avoid most summer bedding, as in busy lizzies and bedding begonias, which have little, if any, pollen.
As for the shrub recommendation, depends if its in full sun or deep shade, or somewhere inbetween, and how deep the border is from front to back.

and then can I add the following to Baboo's list: knautia, nigella, snapdragons [despite the closed flower all are frequently visited by the bees in my garden.

Golden marjoram is full of bees and hoverflies all summer.

For the shrubs I can recommend Abelia grandiflora - loved by bees, as is the viburnum laurus tinus. They both flower regularly during the year, and are evergreen, flowering twice or thrice in a year. The v.l.tinus flowers early and repeats flowering. If the leaves get eaten, spray with rose bug spray. Abelia seem to be bug free!!

thanks to all who responded to my question off to the garden centre this week to see what they have got