Autosleeper Dorset or similar wanted

Hi all. We are looking to buy an Autosleeper Dorset 5.4m with a rear lounge. Or any Autosleeper (campervan not motorhome style) with a rear lounge no larger than 5.5 metres and no older than 2010. Less than 50,000 miles if possible. We live in Yorkshire so if it’s up here all the better. 
If any one spots one for sale somewhere or has one for sale please let me know. 
Thanks

The Dorset was the Marquis version of the Symbol which are far more numerous.

I see as well as doing the Symbol layout there was a version of the Dorset with an end lounge rather like the Warwick Duo. I didn’t know that until now.