Windows 10 Pro including Office £10.99

If purchased, I would expect an activation key. Same as a key from some random on eBay, AliExpress, or any number of 'cd key resellers'.

It won't be a legitimate Microsoft licence; in layman's terms, it's software piracy. But it'll most probably work, and that's all most people care about.

Could get cheaper elsewhere (or free if your Google skills are up to it).

It doesn't include Office; that's available on a separate (currently not available) offer. (edited)