Ed starts his showpublished at 09:32 BST 5 June
Ed has started the first song in his surprise set, Thinking Out Loud, in front of hundreds of fans who have gathered to watch.

Ed Sheeran performed a six-song acoustic set near the University of Suffolk building in Ipswich
The singer posted on Instagram to say he'd be at Ipswich Waterfront on Friday morning
Setlist: Thinking Out Loud, The A Team (with Lianne Kaye), Shivers, Photograph, Perfect, Shape of You
Ed signed off with a message to fans: "I hope you have a fabulous summer and I'm looking forward to the Premier League next season"
Local singer Lianne Kaye took to the impromptu stage first
BBC Radio Suffolk broadcast live from the Waterfront - listen on BBC Sounds
Reporting by Shivani Chaudhari, edited by Charlie Jones
Ed has started the first song in his surprise set, Thinking Out Loud, in front of hundreds of fans who have gathered to watch.

Ed has arrived at the waterfront to start his acoustic set.

Lianne Kaye performed an original song called Glow which she said was about empowerment, followed by a cover of one of Ed's songs, Lego House.
Image source, Zoie O'Brien/BBCLianne Kaye from Holbrook is now opening for Ed, she is a local singer and also works as a music teacher.
Image source, Zoie O'Brien/BBCSome eagle-eyed readers might be able to spot some very lucky staff in Ipswich Marina who are watching from their desks!
Image source, Zoie O'Brien/BBCWayne Bavin tells listeners he understands Ed will go back to his busking days with an acoustic set, probably without loop pedal.He's heard that a local singer will also join him during the set, but no word yet about who that will be.
All smiles from Belle, Darcey, Jude and Esmay.
They've secured a place at the front and are hoping Ed will perform Castle On The Hill.
Image source, Zoie O'Brien/BBCWayne Bavin is now live on BBC Radio Suffolk, broadcasting from the Waterfront.
Image source, Zoie O'Brien/BBCZoie O'Brien
Here's a look at the impromptu performance space...
Image source, Zoie O'Brien/BBCZoie O'Brien
Millie Kirkpatrick from Sudbury arrived at 05:20 in the hope of seeing Ed today.
She’s a singer, a huge fan and is hoping to meet him.
Image source, Zoie O'Brien/BBCShe’s never seen him before and is hoping he plays the classics.
Zoie O'Brien
Ashanti Coleman has seen Ed in both Madrid and Ipswich and is hoping he’ll be playing a new song today.
Image source, Zoie O'Brien/BBCShe’s 38 and loves that Ed never forgets Ipswich.
Ed Sheeran has been active in his home county in recent weeks - first appearing on the pitch after Ipswich Town secured promotion to the Premier League, and then popping up at a restaurant in Framlingham, much to the delight of the owner:
Ed Sheeran delights Framlingham curry house with visit
Image source, Belal MituZoie O'Brien
This is how things are looking on the Ipswich Waterfront. Crowds are gathering by the University of Suffolk building.
Image source, Zoie O'Brien/BBCThis is what made fans excited - posted last night on Ed's Instagram account:
Image source, Instagram/teddysphotosGood morning. We're at the Ipswich Waterfront as crowds gather in the hope of seeing Ed Sheeran.The singer posted on Instagram on Thursday night to say he'd be there from 09:00 this morning.