Windows 7: Selling PC parts - need some help?

Hello! I've got myself a small tower of older parts I no longer use anymore, mostly from other builds I have upgraded and family PCs I've upgraded/replaced. I don't need these parts and they're just taking up space, so I plan to sell them, which leads to my question - if I sell them all online (ie on eBay) will I end up paying tax on the sales? I'm only wondering because if I sell it all for almost what I want to get from it I will push my income over the personal allowance (if it counts as income that is) according to this tax calculator. Anyone got more information about sales stuff for me? Hope to hear from someone soon :)

Thanks

In Canada most sources of income are taxable and sales of used computer parts would qualify. I assume it is much the same in the UK but I have no knowledge of laws there. A call to a tax office would give you an authoritative answer.

Your in the UK and it will have no effect so you won't pay tax

The nine-point test that tells eBay sellers if they must pay tax - Telegraph