I've searched for "white bugs in soil" but that turns up a lot of results. Is there a website which asks you a set of questions and helps you narrow down what the bugs could be and if they're harmful / helpful? I have included the image below incase anyone knows what it is but I don't want to add another "White bugs in soil!" question to Gardening stackexchange if I can help it! ;-D
It's about 8 mm long:
