Welcome to Cake Central. There are many sugar arts programs in England and the UK. You may not be looking in the right places.
There are excellent video/cd classes available from on-line sources.
You have tried many different techniques, which is good for experience. I would suggest for a starting point, you work on perfecting the basics, smooth buttercream surfaces, even piping, and borders.
You can practice with plain buttercream on an inverted cake pan-saves having too much cake around. Good luck.
Hi there, here is a link from Squires kitchen, where they have courses. I too would advice you to do the basics first.
http://www.squiresschool.co.uk/home/index.php?option=com_frontpage&Itemid=1
Here is another link for aine2's blog, where she has modelling tutorial, which you can buy online.
http://www.extra-icing.blogspot.com/
HTH. 
Welcome, You are going to love it here. I also have no training in the art of cake decorating. I am self taught and the people here at cc have taught me so much. Your pics are good! Keep browsing this site and I am sure you will be inspired to try lots of new things.
HI! All the above is great advice.
You might also want to check into the British Sugarcraft Guild, which has chapters all over the UK.
There are also several regional colleges that offer City and Guilds Sugarcraft courses, and adult education courses.
Finally, pop into WH Smith or a newsagent and pick up a copy of Cake Craft and Decoration magazine or Cakes and Sugarcraft magazine (or both!). Several of the stockists who advertise also offer classes.
Hope you learn lots!
Here is a the link for the info that has given by miss_sweetstory.
http://bsguk.org/forum/index.php
if you go to cakes and sugarcraft, you will be able to subscribe for the magazine.
Quote by @%username% on %date%
%body%