(28 Sep 2026, 4:24 pm)V514DFT wrote People seem to forget Newcastle Central used to have 15 platforms instead of 12 right up to when the ECML was electrified
P1 used to be P4, original P1 and P2 is now a car park, original P3 some remains are visible, P9-P12 used to be P12-P15
P2 was P5
P3 was P6
P4 was P7
P5 was P8
P6 was P9
P7 and P8 was P10 and P11

My recollections of Newcastle platforms are very different,  I'm afraid -

P1 was P7
P2 was P8
P3 was P9
P4 was P10
P5-P8 were new platforms created when the sidings alongside old P10 (known locally as "the hole") and the through freight lines (signalled as W,X,Y and Z) were redeveloped.
P9-P12 were P11-P14

The original P1-P6 were all lost under the station car park, although some parts of the old platform edges can still be seen as part of the station concourse near to the Costa outlet.

The original P15 is now part of the staff parking area in the station.

All this assumes there wasn't an intervening platform renumbering that I have totally forgotten about, of course !!