I don't want to have the same problem as Michelle Obama, so I've written to Structural Soils Ltd to see if they can test my soil for me:

Hi, I intend to grow vegetables in my garden, but I want to make sure
that the soil is safe first. Is this something you can help with?

Incidentally, I'm writing this using the Google Chrome browser.

It's really fast and really simple. I think it's become my favourite browser :/ I like that there's a single text box for URLs and search.