You can Google up Dailymotion and Tardismedia for clips of classic episodes that feature the TARDIS significantly, including Masque of Mandragora (for the corridors pre-JNT), Castrovalva and Logopolis.
In Masque it was really just one corrodor that was seen, shot from two angles to make it look longer; I'm pretty sure that this set was either built for the occasion or cobbled from previous usages. AFTER it was "Invasion of Time", which featured the poorly disguised, disused hospital and pool sets.
In "Edge of Destruction" they did reuse bits of the console room between the adjoining sections. Back then the console room was assembled only if they needed it that week instead of the standing set they now have...