Is OTTY based within the UK? OTTY 29 July 2019 09:06 Updated Follow Yeppers – we’re based up in Leeds, West Yorkshire. The weather might be cold, but our hearts are warm. Related articles How long do I have to leave the mattress to expand until sleeping on it? Where can I test an OTTY mattress? Can I try your mattress in any stores? How do I contact you? Is there an OTTY newsletter? Comments 0 comments Please sign in to leave a comment.