A 20-year-old aspiring journalist died after being taken ill at a house in Worcester Park.
Police are investigating after Tayla Woodard, from Cornwall, fell ill at a house in Tamesis Gardens on Saturday evening and was taken to hospital where she died on Sunday.
The Bournemouth University student was in the final year of a multimedia journalism course and was originally from Wadebridge in Cornwall. She leaves behind parents Julia and Russell, brother Sam and sister Jodie.
Her sister posted a picture of the pair of them on Facebook and wrote: "Me and my beautiful big sister. You'll never be forgotten and will always be in my heart.
"Thank you for the wonderful memories you have left me with, they will never fail to make me smile. Sleep tight Tay, I love you so much. Now, forever and always."
Jodie (left) and Tayla Woodard
Friends, including colleagues at the Bounemouth University student union bar, have also paid tribute to Miss Woodard. Drew Hollinshead said: "RIP Tayla Woodard. Always remembered, never to be forgotten. Talented, beautiful, caring and an incredible friend."
Student Jessica James added: "Tayla Woodard so glad to have so many lovely memories with you! R.I.P Tay, love and miss you forever and always."
Miss Woodard wrote regular articles for Bournemouth independent newspaper the Rock and had ambitions to be a showbiz reporter.
A police spokesman said: "Police were called by London Ambulance Service at approximately 5:50am on Sunday to reports of a woman taken ill at a residential address in Worcester Park.
"The woman, aged 20, was taken to a south London hospital where she died at 6:22 am.
"A post-mortem examination took place on Monday. No cause of death was given and we await the results of further tests.
"The death is being treated as unexplained at this stage."
A 20-year-old man was also taken to hospital as a precaution but has been discharged.