On Feb 27, 10:47 pm, "TheOneKEA" wrote:
Hopefully Willesden Junction High Level is done first - nearly all of
the existing stations EXCEPT THIS ONE can handle six-car trains (or
maybe they can handle 2x313, which may be shorter than 2x375).

Not "nearly all" by any stretch of the imagination. According to ye
Quail (*** for too short for 2x313):

Richmond P3-5: 6; P6-7: 7 (through platforms are 8 if anyone wants to
send the NLL to Kingston!)
Kew Gdns 6 Up (to Camden Rd), 8 Dn
Gunnersbury 7 Up, 6 Dn
*** S Acton 4
*** Acton Cen 4
*** Willy J 3 Up, 4 Dn
*** Kensal Rise 3
*** Brondesbury Pk 3
*** Brondesbury 3
*** W Hampstead 3
*** Finchley Rd & Frognal 3
*** Hampstead Heath 3
*** Gospel Oak 5 Up, 3 Dn
*** Kentish Tn W 3
*** Camden Rd 5 (directions change)
Caledonian Rd & Barnsbury 6
Highbury & Islington 6
Canonbury 6
*** Dalston Kingsland 3
Hackney Cen 6
*** Homerton 3
Hackney Wick 6
*** Stratford LL 5 (but P10A: 10; P11-12: 8)

Hope this shows the scale of the platform lengthening job.

James.