My conversations with businesses across the south west over the past year have made it clear that they are strongly in favour of remaining in the single market. (politics.co.uk)
The UK can not remain in the single market without accepting the four freedoms (movement of goods, people, capital, services); this has been pointed out multiple times by Mr Barnier *, the negotiator, and other eminent European politicians such as Guy Verhoofstadt and Martin Schultz among many others. (politics.stackexchange.com)
[3] It is also campaigning for Britain to remain in the Single Market as part of the outcome of the Brexit negotiations. (en.wikipedia.org)