The university does not currently offer a programme in Computational Chemistry. Students wanting to combine Computer Science with Chemistry could register for the BSc in Chemistry: Stream Chemistry and Polymer Science or the BSc in Chemistry: Stream Textile and Polymer Science, both of which give you the option of taking Computer Science up to second year level.
Alternatively, the BSc Mathematical Sciences: Focus Computer Science. allows you to take all of the core Computer Science modules while still taking some (but not all) of the second and third year Chemistry modules.