The bottom line

£13.5bn

How much tax relief for film and TV production contributed to the UK economy between 2017 and 2019, according to the British Film Institute. Every £1 of tax relief generated £8.30 through increased production spending, but also through local businesses, jobs and tourism, exemplified by Bath’s Bridgerton tours.

$40,000

The price of a virtual pair of trainers sold by RTFKT Studios (pronounced “artefact”). Sportswear giant Nike has bought the one-year-old British start-up – which makes digital collectables

– for an undisclosed sum. A funding round for RTFKT in May valued the business at $33m.

£365,000

What two 16th-century books, with a rare folding map, by English writer Richard Hakluyt fetched at auction with Bearnes, Hampton and Littlewood in

Exeter. The two books, covering navigation and exploration, had been valued at up to £5,000.

$7.5m

The asking price for the Beverly Hills home of the late actor Kirk Douglas. He and his wife, Anne Buydens, bought the property, where they hosted parties for the rich and famous, in 1976. The garden features walk-offame-style stepping stones with autographs.

£15.3m

How much charity Friends of the National Libraries raised in five months, with half from billionaire investor Leonard Blavatnik, to save the Honresfield library for the nation. The 500 letters, first editions and manuscripts include those written by

Jane Austen and the

Brontës.

£20,000

How much savannah cats, a cross between domestic cats and servals, a large-eared breed native to Africa, can sell for in Britain, according to The Wildheart Trust.

The charity has called for a ban on the crossbreeding, which is fuelling an illegal trade in wild animals.