There are several UK breeding forums...
TRY...Petforums.co.uk
Perhaps, there is a breeders near you and who knows a vet.

I would buy a covered cat litter pan- and purchase an electric heating pad to put underneath to keep pups warm....you really do need to find someone experienced with breeding to help you. Best of luck and God Bless for taking this dog in!!

Update
 

So to bring you up to date, got a nice vet who offered to give her a check up free although I will need to pay for any other treatment. He saw her on the 17th Jan and said she had less than a week to go and she was in good health with he reaconed about 3 puppies, I should take her temp every morning and evening and leave her to it, most dogs deliver with no problems. Here are her temperatures to date morning then evening:- 99.1 - 100.2, 99.5 - 99.5,
98.7 - 100.2, 98.9 - 100.6, 98.9 - 101.1, 98.2 - 98.7, 100.4 this morning. According to the vet she is due now. What do you think?

It sounds like she is getting close. I have found that taking temperatures is not a sure thing so you have to always be prepared. You need to watch her very closely. I would not 'leave it to her' when it comes to delivering the pups. Yorkies often need help and it can be risky letting her tear the sac and cut the cord. I have read on YT to many times where the female would not break the sac and the pup would die or the mom would accidentally cut the cord to short, exposing the guts, or they can chew off a foot. Here is a website that can give you some advise as to what to expect when labor starts:
Whelping Puppies, Breeding Dogs

I wish you the best of luck.

You did a good job by coming to this forum to get information And there is tons of good information on the net that will help after the pups are born also. On how to give them a great start. Hope all is going well

Time is getting close...best wishes

Update
 

Just to let you all know she gave birth to 6 babies all by herself and they are all doing well although it took hours.

Congratulations on your new litter. I pray momma and babies do well. Momma will definitely need lots of good food and a calcium supplement since she will be feeding a large litter.

three?
 

So much for the vet's guessing she would whelp three pups. Wow what and underestimation!! I have had to get up to feed the mom during the night to keep her milk producing. She was just so unbelieveably hungry.
She really needs to keep her calories up with that many mouths to feed.
Good luck!

Great news..you are an angel for taking such good care of her.

WOW - 6 pups!!!

Good Job to YOU for rescuing her, she sounds like a doll and I can't believe they were going to put her to sleep :mad:

If I could make a suggestion, when you adopt out these pups, please make it Mandatory that these pups are spayed and/or neutered, so this cycle stops with you ;)

Make sure mom is getting plenty of nutrition, thats 6 mouths to feed, yikes!

Congratulations on the pups!
Can I just ask which part of the UK are you from? Did the PDSA tell you that they do not deal with pregnant dogs? If so that is not true, my BF's bulldog had a c-section at a PDSA hospital and a spay.
I am happy that your girl managed to deliver the babies without any complications but I think the issue with the PDSA is something you should look into. The PDSA are there for people who cannot afford vet care or are recieving some sort of benefit, I find it very unfair that they pick and choose what kind of care animals receive.
Good luck with the babies and please post pictures of them and mommy when you get a chance.

what i have noticed in the past, is that unless you know how the pdsa works, no a lot about the species you are taking in, and can tell them almost exactly whats wrong, they do tend to try and pan you off... i'm not pdsa bashing, they are a great organisation, but when i took my friends rottie with Severe mastitis, they sent her and her owner home 3 times to get different paperwork (she took her to the er vet 1st because she panicked. after being transfered to the pdsa clinic, she was sent home to get the paperwork to prove she qualified, and forgot 1 letter, was sent home to get it, left the otheres there because they had aslready been checked, but was then sent back Again to get the 1st lot!) in this amount of time they wouldnt treat the dog, and even though she isnt a vocal dog, you could see the pain in her eyes- and she was away from her 9 pups.
she also got a lecture for 'breeding' her dog as so many are in shelters; she was rehomed from a shelter - pregnant!
there was also some bad and a little concerning advise given, so when possible, always double check with your usual vet.

so glad momma and babies are fine; i bet they are all adorable! pictures would be awesome! :D