the lord john russell was just within the boundaries they had set for lunchtime drinking , being on the perimeter of an imaginary circle which stretched from the corner of tottenham court road and oxford street to the south-west , holborn underground station to the south-east , euston road to the north , and the brunswick centre and marchmont street to the east : requiring a ten minute walk there , a ten minute walk back , but still leaving a good forty minutes to enjoy a pint and perhaps a hastily consumed pub meal .