Ok, here is a 1st draft regeneration scene marking the debut of Matt Smith's Doctor:
The Doctor, Donna & Wilf are fleeing through the streets of London pursued by androids dressed as soldiers who are being used by the Master to stage a coup.
Wilf: I can’t go on Doctor. Leave me. Take Donna and go.
Donna: No way! We won’t leave you gramps.
The Doctor: You’ll just have to move faster old man!
Suddenly a car speeds up with men leaning out firing shots.
The Doctor: RUN!
They run down a side street and through some alleyways, emerging eventually onto Old Compton St in the heart of Soho.
Donna: Whew, looks like we’ve shaken them off. You okay gramps?
Wilf: No. I’m cream crackered and me leg’s gone numb.
The Doctor: Exercise is good for the old. If you don’t lose it you use it… or maybe the other way round.
Two black-clad women approach in skimpy skirts:
1st Woman: *to Doctor* Ere, you looking for company ducky?
Donna: I hardly think he’d be interested in you. Daft tart!
2nd Woman: Ere, who are you callin’ daft? Ugly cow.
1st woman: *To Wilf* Hows about we give you a good time *winks*
Wilf licks his lips, however the Doctor pushes him along.
The Doctor: Come team! We’ve no time to dally with street women. Onward!
They rush round a corner and into a bar.
The Doctor: Lets get some drinks and mingle with the customers. They won’t think to look for us in a bar.
Ordering the drinks, Donna notices that the people in the bar are all men.
Donna: Doctor, I think this is a gay bar.
Doctor: So what, lets mingle.
The Doctor grabs an attractive young man and they start to kiss. However as they do so, the man pulls out a knife. He stabs the Doctor in the stomach then pushes through the customers and leaves. As he does so, he phones the Master on his mobile.
Man: Target located and eliminated .
Donna & Wilf help the injured Doctor out of the bar and into a corridor, next to the toilets.
Several men are engaging in sexual activity near the door.
Donna: Ere, go and do that somewhere else. There’s an injured man here and I don’t want to have to gawp at your whatsanamy business at this crucial moment. Oh no, its starting!
The Doctor collapses and regenerates into the 11th Doctor played by Matt Smith.
Donna: Doctor, Doctor….. Are you ok? Love the new floppy hair.
One of the men in the corridor: Vast improvement, I must say.
The Doctor: Where… where am I?
Donna: In a bar surrounded by horny men who seem to fancy your new body.
The Doctor: I must be in heaven………
……………….. THE END