Planned telephone system upgrade on 27 March: temporary service downtime Last updated: Thursday, 21 March 2024 We're making improvements to our telephone system on Wednesday 27 March 2024, 2am to 3am. During this time, there will be a planned telephone outage. This upgrade will impact Guy’s hospital, St Thomas’ hospital, Evelina London Children’s Hospital, and our acute community sites. If you need to reach us during this period, please call 020 7188 7188. We apologise for any inconvenience this may cause. Thank you for your understanding. Print this page Contact us Media enquiries Phone: 020 7188 5577 Email: press@gstt.nhs.uk Other latest news Honouring 725 years of dedicated NHS service Thursday, 12 February 2026 Professor Gideon Lack named in TIME’S 2026 TIME100 Health list Wednesday, 11 February 2026 UK first as schoolboy has dissolvable fix for hole in his heart Tuesday, 03 February 2026 See all news