At Longcroft House, 2-8 Victoria Avenue, London, EC2M 4NS. It is in a quiet area in the City of London, minutes from Liverpool Street Station and can be easily accessed by bus from London Bridge, Bank and Waterloo Stations.
In Enfield, I'm minutes from Enfield Chase Station (4 mins) and Enfield Town Station (7 mins) at, 88 Church Street, Enfield, EN2 6AR.