Hi, Abutilon will probably flower from early spring until autumn, unfortunatelythey're either frost tender,{+5c} or frost hardy, {-5c} so will have to be brought into a greenhouse for the winter, can't think of anything else off hand, that will flower all summer, Derek.

Hi Roy ..
not sure how large a shrub you want .. but Coronilla valentina has pretty yellow flowers in May onwards for some weeks ...

on the left in this pic ..
http://www.growsonyou.com/photo/slideshow/267952-evening-pebble-garden/member/terratoonie

I hope this helps ..

Indigofera heterantha.

Thank-you Hortum cret I don't know it , I'll check it out Roy.

Hi again Roy ...

try this RHS link for more info.
http://apps.rhs.org.uk/plantselector/plant?plantid=2525

My valentina survived last winter very well...
I planted it in 2012.

Hi terratoonie I haven't been putting it in the comments as I get this thing come up with it saying edit comment ( edit comment what is this ) Roy.

Hi Roy..
'edit comment' just stays there for a few minutes so that if, for instance, you realise you made a spelling mistake, you can click on edit comment and alter your lettering.

Does that explain well enough ?
If not ... ask again ! :o)))

Terratoonie does it actually show up on my comment your end ? Roy.

No ... you only see these words ..

'edit comment' (what is this?)

by your own comments ...

Practise by clicking on your comment ..

click on the words Edit Comment, and try to alter it to Roy the foot ... :o)

Don't forget to then click on Add comment (lower right)
to submit the altered comment...

Hi Hortum cret I've checked out that Indigofera does it belong to the pea family ? Roythefoot .

Azalea or a Rhoddie?

Hi kildermorie yes I would love them but with our soil being neutral I would have to treat them , and would they do as well ? Roy.

A trouble free shrub that flowers for ages in summer and has a second flush later is hypericum Hidcote. You can trim it to size in the Spring when it reaches the size you want without inhibiting flowering. For extra pizzazz grow a blue clematis through it.

I have neutral soil and have Azalea growing well. I applied some acidic feed pellets around the roots when I bought them and around the base of the plant if the leaves look pale and that is it! Biggest problem was keeping them watered in summer as it was so dry.

Thank-you kildermorie that's interesting I'll certainly consider that now , brilliant Roy

Hi steragram that sounds good as well, with the yellow and blue that would certainly be colourful, another to consider , Roy.

Roy
Indigofera is indeed a pea, and I. heterantha is upright and shrubby. Long-flowering, tough, and loves the sun

Afterthought -The hypericum is only just evergreen, depending on the latitude and the severity of the winter - it does look a bit miserable just before the new leaves start to grow but the flowers are so bright and cheerful you can forgive it..

Hi Hortum cret that sounds good especially if its upright as I can't stand things drooping, and if its hardy and likes the sun, should be good.

Hi steragram sounds like with these ideas coming in I will probably be replacing other things, that's what I like bright and cheerful things.