Not quite.

Copyright and protection

The copyright of all scripts sent to the BBC rests with the writer – you do not need to formally copyright work before you send it in to us. Writers are often anxious that their work may be stolen or plagiarised. However, similarities in writers' ideas, material, and scripts occur surprisingly often. BBC writersroom does not recommend scripts to departments without first contacting the writer, and we do not retain copies of scripts that have been rejected and returned to the writer. BBC writersroom isn't looking for ideas for production in the first instance – we are primarily looking for scripts that show a real talent and potential in the writer.

In the rare event that a producing department wishes to option an unsolicited script, the BBC would necessarily agree appropriate contractual terms with the writer in line with standard BBC agreements. For further information on legal and contractual issues for writers, you may wish to contact the Writers' Guild of Great Britain. http://www.bbc.co.uk/writersroom/sen...and-conditions

So similar to what I later stated? Cool!

well didn't they have to ask Terry Nation (or his estate) every time they used a Dalek or tried to merchandise a Dalek. So the BBC wasn't in 100% control.

Your post didn't really land for me I'm afraid I actually couldn't tell whether you were trying to be funny or going for patronising. Kinda immaterial I guess as, as you can probably tell, I don't agree with you

Well that could be why they changed the contracts so in the future they don't have to ask every time they want to use a character

I think they got in trouble over using K-9 lately too didn't they?

it does say on wiki-pedia that:-

'After debuting in the final scene of School Reunion, K-9 Mark IV returned in spin-off series The Sarah Jane Adventures' premiere episode Invasion of the Bane, where due to licensing issues with creator Bob Baker it is explained that K-9 is sealing a black hole and can only communicate briefly and infrequently with Sarah Jane.'

But not sure how far you can trust wiki.

I'm currently doing a Series 8 rewatch and I really do hope we see at least another episode from these two. Both Psi and Saibra just fitted in naturally with the Doctor and Clara, better than Danny did when you think about it.

They both complimented Capaldi's version more than Clara and Danny did.

I really liked them both. It was a fantastic episode to

I agree, I'd like to see them turn up a few times in the future episodes, and if Clara leaves they'd make great interesting companions. Danny didn't fit in at all imo, i really hope there's no chance of them bringing him back.

Psi would be a brilliant companion -part human/part Cyborg. Like a good-looking K9!!
Time the Doctor had a 'different' companion!!

That would be AWFUL! DW will become UNWATCHABLE!
I'd rather they bring back Bonnie Langford! She was less annoying than those two!

I sincerely hope not... Psi and Saibra were both terrible characters played by irritating performers.
"Time Heist" had the potential to be a good episode (especially as it featured the fantastic Keely Hawes!) but those two unbearable entities made it the low point of Series 8.

Can you imagine going from Jenna Coleman to those two??!!! Talk about a come down!