UK

The UK 2016 NAP mentions SMEs in Government expectations of business section [page 15]:

“Respect for human rights should be at the heart of a company’s core operations, it is not the same as philanthropy or social investment. The responsibility of businesses to respect human rights exists independently of States’ abilities and/or willingness to fulfil their own human rights obligations. Different businesses will need to take different approaches to embedding this approach. Implementation will be progressive and will need to be compatible with the resource limitations of small and medium-sized enterprises.”