Yes, you will be considered for admission at University College Birmingham (UCB) to study for their digital marketing BA top-up degree.
They require “120 ECTS or equivalent (European Credit Transfer)” which is equivalent to two years of full-time study at a recognised university. Since you have an HND from Nigeria, assuming you studied for two years, you would have fulfilled this requirement.
Also, check out our article on using your HND to gain admission in the UK