Where is it?

Travelling by Rail / Underground to the BT Centre

St Paul's underground is directly across the road from BT Centre.

City Thameslink Station is 3-400 yards along Newgate Street (about 10 minutes walk). Though the map doesn't show it clearly there are two exits from City Thameslink, follow the 'Holborn Viaduct' exits from the platforms. When you exit there should be a Starbucks to your left, pass this onto the street and turn right.

Travelling by Air to the BT Centre

London City Airport:
Shuttle bus to Liverpool Street Station (30 Minutes), then Central line to St Paul's (10 minutes). Or get off the shuttle at Canning Town (10 minutes) and get the Docklands Light Railway to Bank (20 minutes) and then the Central line to St Paul's (5 minutes) or walk from Bank to BTC (10-15 minutes)

Heathrow:
Underground Piccadilly line to Holborn then Central line to St Paul's. (60 minutes). Alternatively, Heathrow Express to Paddington (30 minutes), Paddington Underground Bakerloo Line to Oxford Circus and Central line to St Paul's (20 minutes). Or from Paddington 10 minute walk to Lancaster Gate and Central line to St Paul's. (10 minutes)

Gatwick:
Gatwick Train station to City Thameslink (40 minutes)

Luton:
Luton Shuttle bus (free) to Luton Parkway Station ( 5 minutes) and then train to City Thameslink (40 minutes)

Stansted:
Stansted express to Liverpool street (45 minutes), then central line to St Paul's (10 minutes).