No. At present the advice is that you are not permitted to travel to collect a puppy under the current restrictions.
Ultimately this has to be a personal decision based upon your own specific circumstances. But, there are several specific areas to consider before breeding at this time. For example: Is there someone that can help you if you fall ill? Can you keep puppies longer than expected if there are government restrictions which prevent new owners from collecting them? Will your vet be able to assist if there are any issues? Can you correctly socialise the puppies?
As vets are the only qualified professionals allowed to carry this out, you would need to speak to them to see if they will allow the appointment to go ahead. Phoning the vets with as much notice as possible will enable you to plan how to deal with this in the current circumstances.
You would need to speak to your vet in regard to which procedures and appointments they are carrying out at this time. Due to the current guidance set by the government, some appointments may be put on hold. You can find further help and guidance on the Kennel Club and BVA websites.