Here's what the judges had to say:
Len: (8) The fun and entertainment you've just given us was fabulous. There is a little bit of technique to this dance, and I would have like to have seen a little bit more of the swivelling feet and crossing legs. But for entertainment, especially that last little bit - brilliant.
Bruno: (9) Chris - the delightful dancing fool at its best! It was exuberant and exciting. The concoction of slapstick and dancing - it has the Egyptian, the hamster, the gymnast - it was your best dance so far for me.
Craig: (8) Very crowd-pleasing, darling. Theatrical, punchy - I loved it.
Alesha: (9) Chris, I've seen a whole new side to you tonight. You owned that dance. There was so much enjoyable content. It was a brilliant routine. It had the energy, it was fun, you've upped your game and you've set the standard for the Charleston.
Group Dance: (7) We thought they did really well, a little bit skippy here and there - well done, Chris.
Len: (8) We wanted to see high energy, quick underarm turns, a flash of knickers - we saw plenty of that. Basically what we saw tonight. It could have done with a little bit more freedom, a bit wilder and there was a nasty incident early on, where you went wrong.
Bruno: (7) Ricky, it is clear you can throw a girl left-right, up-down and centre with ease. There was no problem there. But we are getting close to the semi-finals and it would be really good to see you do a whole routine without making a mistake. You always make a tiny mistake. You are good, but you have to dance to the level you are capable of doing.
Craig: (7) I think Bruno is right. The timing was appalling at the top, you need more height in the lifts. As brave as they are, you need the higher lifts to use the music. Also, you were really off the balance at the end. It was OK, but missed a bit of pow!
Alesha: (7) Ricky, you are certainly king of the lift, there was some great throws and you showed why you are a great partnership. But too be honest, it was a little bit too school for me. I think we could have seen a little bit more from you and it was a bit lacklustre. I know you can do better.
Group Dance: (9) Beautiful, lovely and lyrical - well done, Ricky.
Len: (9) I've seen a different side to you. I thought you could only do elegant waltzes and foxtrots. But no, you've come out here, shaked it all about and cocked your leg up. It was great!
Bruno: (9) Ali, you were a fabulous flapper. You got the swivelling feet perfectly. Your legs in the air - my God, I thought the extension would go on forever. It was like being in Chicago in 1927. Did you get it from Chicago the musical? It really had the flavour of the era.
Craig: (9) Goofy, gangly at times, but it was gorgeous. If Josephine Baker was alive today, you'd be giving her a run for her money, darling.
Alesha: (10) Last week, I said that you were the front-runners and this week, you proved that I was correct. You were like a cute little rag doll. It was quirky and we saw the actress in you. You looked gorgeous and after the week you've had - that was outstanding.
Group Dance: (10) Still a fantastic standard, Ali - another 10!
Len: (7) The problem is, we all love Natalie. Last week your samba wasn't great and this week wasn't either. It could have done with the roly-poly or just something else to give it the wow factor.
Bruno: (7) They said it all. You are a goer and we love you for it. But we are getting towards the quarter-finals and I'm going to have a go at you, Vincent. We can never tell if her legs are bent, you need to teach her how to finish a move. I've said it 20 times - it's up to you, mate, whether you do anything about it.
Craig: (5) That didn't work for me. The first lift didn't go anywhere and you didn't even attempt the side-to-side. I was rather hoping that there would be a few more tricks, lifts and drops. It was very one-dimensional.
Alesha: (7) If anyone can sell this dance on personality, you can do it Natalie - and you did. But I was a little distracted because it became a tad clumsy. When you came through Vincent's legs, I would have liked them to have been closed and on those drops, try to keep the legs straight. It did fall a little bit flat and wasn't your best dance, love.
Group Dance: (7) It could have done with a little bit more musicality, but well danced.
Len: (9) I can't joke about that because Craig is one hundred per cent wrong. That was brilliant. Craig is being nonsensical. I don't know whether you do it just for the boos, but you are getting on my wick. It was lovely!
Bruno: (8) It was a glitzy panto of a Charleston. And for once, you didn't go wrong, which was a plus.
Craig: (6) I thought it was very heavy, lacked any swivel, it was very laboured. I did love all the storytelling, but I thought it was danced very poorly.
Alesha: (8) Laila, you looked like a goddess and thank you for getting Anton to this stage in the competition. It had the comedy element, it had the fooling around, it suited both your personalities so well. Well done!
Group Dance: (8) Well done Laila! A nice job, well danced.