THOUSANDS of people set up their picnic rugs to enjoy a weekend of fun and history at the house where Batman was filmed.

Osterley Park and House, welcomed 3,000 people to its annual free summer festival, Osterley weekend, on Saturday and Sunday.

Families set up their picnics on the grass in front of the National Trust house - which doubled as Bruce Wayne's Wayne Manor in the latest Batman trilogy - while others took part in an array of activities, including archery, chainsaw wood carving, a petting farm and face painting.

There were free tours of the house, which was built in the 1570s by banker Sir Thomas Gresham, and the Covent Garden Minuet Company performed dances in its entrance hall.

Cream teas and Pimms were the order of the weekend as people enjoyed the sweltering heat, which pumped the mercury up to 30 degrees.

Karina Swann, visitor experience and marketing manager at the house, said: “It was a great weekend, the place was heaving and there were picnickers everywhere, it was really lovely to see so many families coming together to enjoy the sun.

“I heard lots of people saying, 'Oh my gosh, I didn't know Osterley House was here'. People were at the house and in the park, all day long.

“I think it was a really good showcase of what we are and hopefully more people will realise it's right on their doorstep.”

Osterley Park and House is opening up a new exhibition on Saturday (27) until September 3, called the Trappings of Trade, which will explore how the East India Company shaped Osterley.