Do you know which district you are in? (I confess I did not know, and guessed wrongly before I checked). Wards can be a bit counter-intuitive, being more about the numbers than the geography. If you visit https://www.writetothem.com/ and enter your postcode, you can see who your representatives are at district, county, country and European levels. It’s also a very handy site if you want to contact any of your representatives to make your opinion known.
The district council has a third of its seats up for election each year. Is your ward being contested this year? You can find out here - http://www.stroud.gov.uk/docs/democ/elections.asp#s=sectioncontent10&p=notices,forthcoming and also see if there are seats available on your Parish council.
On the 22nd of May, we also have European Elections. If you’d like to know who is standing for those and which parties they represent, there’s some good information here - http://ukpollingreport.co.uk/2015guide/south-west-european-candidates-2014/
Finally, if you’d like to find out more about what your existing representatives get up to, you may find this site helpful - http://www.theyworkforyou.com/
Democracy works a lot better when we can make informed choices about the people who represent us. Politicians should be accountable, and the internet makes it a good deal easier to check up on them!