I'd like this plant identified please.

looks like it may be a daylily or hemerocallis. the semi shade may be the problem as most of these prefer full sun.

Or Agapanthus - but both the plants you have displayed in your questions are very clearly suffering from lack of water. Agapanthus needs sun and water to flower at all and all plants won't flower well with frequent drought situations.

i discounted agapanthus as mine doesnt have the criss cross pleated leek ish form of the leaf. if you know what i mean.

Thanks for the advice. I think the best option is hemerocallis as I have agapanthus so will replant in the sun with a few more specimens later on. I note the lack of water so would appreciate a view on how often the garden should be soaked during dry periods.

PLEASE read my blog on watering - click on my icon and select the right blog, there's only about 5 to choose from and it's not very long - but it saves me having to repeat myself at length!