![Runners make their way through Canary Wharf during the TCS London Marathon in October. PA](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/KA6UVNUMIERNRNRTEGTDTUF46M.jpg?smart=true&auth=33b8d2ee83c0bdf1e37040f7cbd225e92ea67825e3390b81b395a8b80ff855ca&width=400&height=225)
Runners make their way through Canary Wharf during the TCS London Marathon in October. PA
Runners make their way through Canary Wharf during the TCS London Marathon in October. PA
UK health official warns against 'long runs' amid NHS stress
Sir Frank Atherton says 'now is not the time' for people to put themselves at risk