Most universities in the UK that offer masters degrees will require you to possess an undergraduate degree before you can be admitted to their masters programme directly. However, you can enrol into a top-up degree and gain a BSc within a year, or you could apply for a Postgraduate diploma initially and transfer into a masters programme. Please read our article about the process from HND to Masters degree.
Also, read this article on applying to Top-up degrees in the UK.
For universities in the UK that accept NECO, find the list here through this link.