Nearly half of £8.2bn R&D tax relief goes to London and South East firms■ Mars to spend £161m on Melton Mowbray pet food factory■ Tom Brady ends Birmingham City role three years after Knighthead deal■ Vinted and eBay could join under-16s social media ban, says Nandy■ AI and defence investment to drive 1.5 per cent UK growth, says KPMG■ Bailiffs seize BYD documents as JLR builds Ti7 copycat case■