It would be much better if you were to grow plants that would suit the conditions. There is a limit to how you can change the pH of the soil. Certainly growing them in pots that are buried would help solve the problems of the soil pH.
as to plants it is a matter of personal taste. Sorry not much help am I :o)
browse the pictures on here or look through a good plant book for inspiration.

If the beds are in shade or sun will steer your choices. Acers could do well in the bed, if it's sheltered from the wind, sun or shade, especially as you've 'improved' the soil. I'd try a bamboo called fargesia (there are a few species and cutlivars), not so tall as some, and fine stemmed. So many choices. Under plant for now, that is, don't crowd the plants. Let things have plenty of space so they can stand out and look good for you while you decide on your next worthy plant subject. It's like having a new sheet of quality drawing paper - exciting

Thank you for your replies, will get pics uploaded soon then I hope you will help me further. This project of mine took very little time, what has taken the time is the decision making, if you like procrastination. I'm the one for it, and the weeds will know. The soil is heavily alkaline, indeed what would grow here would grow in a desert but here it is too cold.This area being by the coast is subject to all extremes of temperature, it is mostly open so gets the sun [its a sun trap] and wind and rain in equal proportions, however, being a new home has fencing all around the perimeter, some parts have a little protection but not as it were these two open beds.

Alladinsane, could you put your county onto your profile page please, it could make a difference to what advice you are offered.

Re the acers then, I'd be wary. Although they will tolerate chalk given a good start, they like somewhere sheltered, and salt breezes WON'T do them any good at all. There are lists of plants available for plants that are suitable for specific situations. It's worth noting those

Please note http://www.ultimatehandyman.co.uk/forum1/my-build-pics-continued-t59915.html for the stages involved in build, and note there were other pics starting from the get go which I have still but, for some unknown reason UHM took down.For those interested this was not an easy project, in total approx 40+ tons of soil, rock, old road, walls and anything else the builders of this house decided to bury there were removed from a barren slope by my own hands, no mechanical diggers were involved,they would not go through the gate. This was a long and laborious process and at my age I should have known better. Myself and another much younger person also laboured to the bricklayer over one month something else I hope I never have to do again.

The county I live in is not mentioned in the scroll down list , that is why it is not in my profile, I live in the North of England not far from Durham, by the sea.

Thanks very much for all the interest I have received.I very much appreciate peoples endeavour. I have added the pictures of the plots to help people help me. I like Bamboo and have two Rufa ready potted on to go in this bed, these are reputed but not by me to be the hardiest of all bamboo. I also like Ceanothus and my favourite flower Aubretia amongst many more shrubs and plants alike. I just need the plants and their so called companions now so I get all year round interest. Tell me, as I am, to date unsure,but can I supply links to other interesting sites on here or is it against the rules?

Oops, but I had a computer glitch following on from it above I noticed I have already left the link so I am indeed damned if it flouts the rules.. All other pics for those interested, what Ultimate Handyman site seem to have took down are available for those contemplating change, the steps are provided from barren wasteland to almost finished project in separate photo detail which I could upload.