@Holdfast,
Such paintings were popular with the landed gentry during the 19th Century.
They would commission artists to come along to their estate and paint such a scene. The artist would probably spend several days there, strolling around the grounds and sketching the landscapes, the horses ( including the favourite which should take pride of place) and the various people and outfits to be included in the painting.
He would then go back to his place of work and paint the grand hunt scene. It was the early Victorian equivalent of colour photography.
Your painting shows a typical, probably English foxhunt, with landscape that could be anywhere in rural England.
If you're wondering about value, then it must be said that foxhunting paintings do not fetch great prices, as modern attitudes have turned away from such "sport", but a famous artist would always fetch a reasonable amount.
I can't make out the name of the artist, but maybe a British auctioneer might steer you in the right direction if you send them an email with the photo and ask nicely.
Also, look on the back of the frame/canvas to see if it gives you any more clues.
It certainly looks like a quality painting. The frame alone would be worth a bit.
Good luck.