England win by 30 runs
Joe Denly opens the bowling and takes four wickets
Denly playing first international for eight years
Adil Rashid takes 3-12 from four overs
Jason Roy, dropped four times, makes 69 from 36
Three-Test series starts on 6 November
Right, that's all from us today.
You can catch up on all the action from Colombo in our match report over here.
We'll be back for the Test series, which begins on 6 November, and for the ICC Women's World Twenty20, which begins on 3 November.
Thanks for joining us. Until then...
Joe Denly: "It's been a while since I've been in England colours but I'm delighted to be back and contributing.
"There were a few nerves there, but it was more excitement. I've been really looking forward to it.
"The batting was a new experience for me, down the order against one of the best bowlers in the world. It was tricky, but I managed to contribute to get us up to a decent score.
"I land my leg-spinner pretty well. Being mainly a batsman I have a good sense of what the batter will try to do."
On playing in the Test series: "I think being able to bowl will help my case. There are a couple of warm-up games, so hopefully I can perform there to put my name in the hat."
In a surprise to absolutely no-one, Joe Denly is man of the match for his heroics with the ball.
What a day he's had.
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So, that means England have claimed victory in both of the white-ball series.
The Test series starts on 6 November in Galle, although England have two warm-up matches on 30 October and 1 November.
Brilliant stuff from England's two leggies - they never let Sri Lanka get started.
Denly, incidentally, has the best figures by an England spinner in a Twenty20 and the second best by any England bowler. Amazing.
Malinga b Denly (SL 157)
Four for Joe Denly, and a convincing win for England!
Almost nine years after his last international appearance, Denly finishes with 4-19 and secures England's victory in this sole T20.
A single gets Lasith Malinga back on strike.
Sri Lanka need a highly unlikely 31 runs from this final ball...
Last man Lakshan Sandakan walks out for the final two balls...
Thisara c Roy b Denly 57 (SL 156-9)
A full toss from Joe Denly, and Thisara Perera swings it straight to Jason Roy on the fence.
And that's why Lasith Malinga is keeping well out of the way.
Thisara Perera cracks a huge, straight six over Joe Denly's head.
Dot ball.
Lasith Malinga is standing so far away from the crease that he's not even in shot.
A swing and a miss from Malinga, who gets struck on the pad, but that's sliding well down the leg side.
Joe Denly is going to bowl the final over! Excellent.
And Lasith Malinga has taken his helmet off to face him.
SL 149-8
Full toss from Sam Curran - and it's carted for six!
That'll be 50 for Thisara Perera, from 28 deliveries. Just the five sixes in there...
A terrific bit of fielding from Chris Jordan, stopping the ball on the edge of the boundary and flicking it up to Ben Stokes before he falls over the rope, limits Sri Lanka even further.
Tom Curran then offers up a bit of length and Thisara Perera promptly whips him high into the crowd for six.
It's so wet and dewy out there that the umpires have decided to change the ball.
Tom Curran will bowl the penultimate over for England.
Need 54 from 12 balls
Chris Jordan bowls his final over, whizzing down a series of low full tosses that Sri Lanka just can't get away.
A four from the final ball is the only mistep in an excellent over.
Need 63 runs from 18 balls
Up in the air goes Lasith Malinga, but he somehow manages to spoon the ball between three onrushing fielders.
Full and low from Tom Curran, and Thisara Perera can only bunt it back down the ground for one.