URGENT: I checked the text on a few of your product pages, then searched for a snippet of your product description in quotes. Your descriptions are posted on other sites. And that text on your site for some products is verbatim identical to the product descriptions displayed on amazon.co.uk. That is deadly. Google is filtering several other websites where this same text appears verbatim. I see amazon with verbatim and four filtered results here. So, I would be sure that the text on my site is unique. If you are spreading it to amazon, rewrite what is on your site. If other people are stealing your text, that's a harder problem to solve.
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If this was my site, I would do the following with the category page. I am not saying that everyone is going to agree with me, but this is where I would bet my money and time.
-- Include two to three sentences, in proper language, about each of the products. Give the visitor enough information so he/she can decide to click. Don't give me a whiff and make me click to taste it. People who buy tea are the kind of people who don't mind reading by hate clicking into fifteen pages just to get some idea about the product.
-- Personally, I would ditch the hover-over effect and get that text onto the page. You NEVER know how search engines are going to treat it. You never know how devices are going to treat it, or how old men like me, who enjoy their tea are going to react when it doesn't seem to work when I click on it. Also, I believe in getting all of my info out for the visitor. Don't make the visitor click to another page unless he is really interested.
-- I would show the rating on the page. Ratings are like bling. Flaunt them.