just imagine the scammers and lawyers field day...
...when the restriction on bare .uk domain names is lifted and everyone with a .co.uk who hasn't bought the variant finds some piece of **** has used the variant in a way disadvantageous to the .co.uk version.
But of course quite ready to transfer it to you for ££ - or would you prefer to hire a lawyer £££££. Even just taking the dispute through Nominet DRS can reach £3k so you're better to pay the scammer half that.
Meanwhile just off to buy mommynet, obviously a web site for moms and totally not remotely like any domain name registry that might have a similar sounding name.