There is a direct coach connection from Heathrow to Oxford. The buses leave fom Heathrow from the following points:
Heathrow Central Bus Station stand 14A
In Oxford the bus stop that is closest to New College is High Street - Queens Lane. The bus stop is marked on the map. The entrance of the college is in Holywell Street.
A 'period return ticket' is significantly cheaper than two single tickets. The tickets can be bought from the driver, who will accept cash only. Tickets can also be booked online from the Oxford Bus Company.
There are trains from London Paddington to Oxford.
Travelling by coach is cheaper and you can get off the coache at the High Street - Queens Lane stop, which is very close to New College. There are two companies running coaches. In London the routes of the Oxford Express X90 differs slighlty from that of the Oxford Tube.
For further directions to New College please visit the New College web site.
The Noel Salter Room is also know as Lecture Room 4. For a map of New College see here.