Thameslink Core diversion routes?

[BingBong50]

As we saw last week chaos reigns when for whatever reason the core becomes unavailable for use. This is bad enough when it happens now but when the Thameslink programme is complete and the core is at capacity are there any diversion routes that could be used either for passenger service or ECS to relocate stock?

My knowledge of the network is not that brilliant so this is a question more out of interest than anything. Are there any options using the London Overground route from New Cross Gate via Surrey Quays or Clapham Junction via Kensington Olympia to get Thameslink Services South North South if needed in a real emergency under their own power?

 

[WestCountry]

I don't think it's possible yet under power - the Camden Road - St Pancras curve only goes to the International side, and none of the other MML connections are electrified.

Once the St Pancras Thameslink - ECML tunnels open you could theoretically do St Pancras - Finsbury Park (reverse) - Canonbury (reverse somewhere), then either down the ELL (reversing at Highbury & Islington) or all the way around via the WLL, with OHLE or 3rd rail the whole way.

Would be horribly impractical though, even for ECS.

 

[swt_passenger]

I recall that Thameslink units have used a long winded route via the Southern, the WLL and NLL to get from the MML to Hornsey in the past, so that part of the route is OK.

With respect to the ELL, I doubt any stock at all other than 378s is cleared for the route anyway, but even if it was the connection at Highbury and Islington (H&I) is not available for normal use, IIRC it is only available under an engineering possession, and there is intentionally no overlap between the AC and DC electrification systems at that location.

(Appreciate any update if the set up at H&I has changed recently though.)

 

[W230]

I recall that Thameslink units have used a long winded route via the Southern, the WLL and NLL to get from the MML to Hornsey in the past, so that part of the route is OK.

Still a path for 319s to go to the wheel lathe at Hornsey. But the jobs are contracted out to GBRF as we don't sign the route.

It's unlikely TL drivers ever would as it would need to be used to stay in the route card and once the Canal Tunnels open up there will no longer be any need for this lengthy diversion anyway.

Generally when there is a problem in the TL core we just get sent to dump units at either Selhurst (south side) or Cricklewood (north side).