Is in that a garden warren surrounded by the UK that you can saunter through? um, other than mine (seriously, i suggest a proper kept garden...

um, other than mine (seriously, i suggest a proper kept garden maze!) is in that one at some royal garden?
Answers:    In addition to Longleat (can seize stuck for hours) and Hampton Court (Right, right, right - if I remember from visiting as a child!), in that are a number of Corn Mazes across the country. Have connected to some websites. Obviously these are only nearby at certain times of the year.
Hampton Court Palace, have a brilliant maze, and gardens, and also be the home of King Henry Viii, it is a great day out.