Do not do as suggested by Lee campbell its illegal to pump the water mains, get a plumber who should be approved by the local water authority if you wish him to make the "toby" connection in the street, some water companies do this connection free, if so the plumber will run the pipe from the toby to the stopcock and make the connections internally whilst the water board make the tovy connection
Hi Rachel! I can prove that it is completely legal to boost your water mains pressure. Please google Salamander water mains pump. There sold by the largest national plumbing merchant Plumb Centre. Thank you!