Mila Kunis and Ashton Kutcher reportedly want to marry in the UK. The couple have been staying in London while Mila shoots 'Jupiter Ascending' and have reportedly become so besotted with England they want to tie the knot there once Ashton's divorce from ex-wife Demi Moore is finalised. A source told the Daily Star newspaper: "Mila and Ashton have fallen in love with the UK. They are desperate to get married as soon as possible because they want to start a family and are slightly old-fashioned about these things. "The first place they thought of was Stonehenge, but they've also been looking at the Royal Pavilion in Brighton. Mila loves the idea of a stately home or something in the English countryside." Despite considering lavish venues for the big day, Mila, 29, and Ashton, 35, want the ceremony itself to be "low-key" with only a few select guests witnessing the nuptials. The source added: "Although the venue may be spectacular, the wedding itself will be low-key. It's expected it will be just Ashton, Mila and a few family friends." Although the couple are yet to announce their engagement, things have progressed between them over the past few weeks as Mila introduced Ashton to her parents, Elvira and Mark, when they came to visit her in the UK at the end of May.