Clutching her mask statuette backstage, she told the Press Association: "If someone had told me I would have had a husband, a baby and a Bafta in 2016, I would not have believed them. I'm very happy with my lot."
Poldark star Aidan Turner said that winning a Bafta is the most surreal thing that had happened since the show began.
Clutching the mask statuette, he said: "This is pretty cool, winning a Bafta audience award."
He added: "It's rare I get offered anything but this was one that you read and can't turn down. I don't think any of us could expect the success it would be."
However, he remained tight-lipped about the second series of the hit drama, saying: "I can't tell you anything, I would get fired."
Debbie Horsfield, screenwriter of the show, was a little more forthcoming, saying: "It's darker, more intense, a few more tears."
Turner was equally tight-lipped about rumours he is in the running to take over the role of James Bond from Daniel Craig, saying: "It's just rumours, I don't know anything about it."
Sir Tom Courtenay, who won best supporting actor for Unforgotten, said he is glad the ceremony ends a long run of awards ceremonies that started when he won the top acting prize at the Berlin Film Festival in last February for 45 Years.
He said: "I'm glad this is the last one, I do find them a bit trying, they are very lengthy.
"I don't like going past people wanting autographs, I just want to say 'get a life'. Then they want a photograph too to prolong the agony."
Mary Berry, who collected the best features Bafta, explained how her life had changed since the show started.
She said: "It does mean that if I'm shopping people stop me, so often they touch me on the shoulder and say, 'I love the Bake Off' and 'I make your lemon drizzle cake'. They never criticise it and say the whole family watches. Many parents say all generations and a baby in arms are all watching it together and it's so satisfying.
"There are so many baking competitions on Fridays now with people taking cakes into work. It really has got everybody raising money through baking too."
Ian Hislop, who collected the award for best comedy and comedy entertainment programme for Have I Got News For You and performed a little jig backstage, said he did not believe the show would fare well if plans to reform the BBC went ahead.
He said: "I don't think we would be on, I can't imagine it, the tendency to interfere is always there, politicians do it and it's one of the reasons I made a fuss about the Leveson proposals.
"If you get the state regulating the press then the press can no longer regulate the state and the same is true about broadcasting. They have got a royal charter and it's not helping them much.
" It's so extreme. We have all had a lot of fun with John Whittingdale and suddenly he's proposing something absolutely extraordinary, that the state appoints the editorial board of the national broadcaster, it's ludicrous."
Leigh Francis, who triumphed in the entertainment performance category for hosting Celebrity Juice as his alter ego Keith Lemon, said he never expected to win.
He said: " I'm rarely up for an award as Leigh Francis, I was trembling and now I'm thinking of all the people I should have thanked for helping me to be Keith Lemon and I didn't, I just lost it. I'm never me, I don't want to be.
"I've got d ry mouth and my hands smell like I've been holding a bag of change because this is really metally and heavy. I just want to see my wife now. There might be some tears."