sentences:  Today Blackcircles.com has grown to be a significant player in the UK tyre retail market, generating sales of around $100m annually and looking after over 2,000,000 customers.The company is still headquartered in the Scottish Borders town of Peebles.In 2011 Tesco Tyres.com was launched, a joint venture between Blackcircles.com and Tesco Plc, the world's second largest retailer.