My guess as to date is June 22, 1911, Coronation of King George V. The badges could be coronation medals which were given out on that day(just a guess, as I can't see them well). The clothes are right for that date, as is the teddy bear. The group of men appear to be working-class,
dressed in their "Sunday best"(usual at the time as poorer people did not own "sports' clothes"), whereas the family in front are wearing the more casual clothes of the upper classes, dressed for a picnic. The little boy is wearing a sailor suit,
just like the one worn by the little Prince of Wales. The teddy bear was a rather new toy in 1911. They were first made in 1902 in the US, Germany soon after, then England.
This looks like an English one(said she, wearing her antiques' dealer's hat), so very expensive at the time (and worth a fortune now).
With so little to go on, it's hard to say, but I am inclined to to guess that the family in front are perhaps the owners of a factory, mine or some large business and the men are the employees, being treated to a celebration on the grounds of the employer's house. I imagine that the workers' families would have been there too, but not included in this picture. There may have been several pictures and this happens to be the one with just the men, lined up for a company picture.
Anyway, that is my little scenario. It may be wrong in some ways, but I am pretty sure about the social status of the people and the boss and workers idea seemed like the best
explanation. There could be a lot of other reasons for these people being together. Perhaps someone else can build another story on my coronation theory.
I see there have been two more posts since I started this reply
and they cover some of the same ground, but my arthritic fingers
are not up to more typing, so I am posting it "as is".
Cheers,
Carmela