On Tuesday, December 29, 2015 at 11:58:03 AM UTC, Robin wrote:
I noticed the status displays at Stratford yesterday were showing issues
on the Overground under the headings of various "routes" - eg

"West Croydon route
Upminster to Romford route
Stratford to Richmond and Clapham Junction route"

Nationalrail.co.uk has a list of LO "routes" and for each a map suggesting alternatives in case of disruption; your examples are among the names used -

Richmond - Stratford
Willesden Junction - Clapham Junction
Gospel Oak - Barking
Highbury & Islington - West Croydon / Clapham Junction
Watford Junction - Euston
London Liverpool Street - Enfield Town / Cheshunt / Chingford
Romford - Upminster

http://www.nationalrail.co.uk/statio...ons/46653.aspx