
Tis the Brunts! (Apparently.) Mr and Mrs Brunt were haulage contractors to John and Yoko, last seen on these pages proving good to their job description by hauling the caravan from Dorinish to (probably) Tittenhurst.
And here they are again with unknown others, outside the front door at Kenwood, posing in and around John's white Roller. You can see the entrance to the big garage on the left, the other end of which overlooked the swimming pool.
Dating this is a bit tricky; it's obviously not December, 1968, when John and Yoko were extensively photographed making their last stand at Kenwood, following several months chez Starkey at Montagu Square.
So I'd go for (circa) June of the same year, around the time that Smile and Two Virgins were filmed in the grounds, and just before the move to Ringo's Marylebone maisonette. From the home movies shot on the day of filming, it's clear the weather was more than mild enough for short sleeves.
Placing the above pic next to one of the many fan photos taken here gives an idea of the whole perspective:

The other point worth noting is that the area to the right was very likely the venue for the Rubber Soul cover shot:

Even this bit of Kenwood hasn't managed to escape the ungainly hand of renovation; the wall has been rebuilt, partly as a result of constructing a whole new garage in the mid-1990s.
Much gratitude goes again to Dennis Toll for these.