I am afraid you may stumble at the first huddle, in so far as you will need to obtain your Mortgage Lender's consent before the Deeds can be transferred into your joint names (your Mortgage Lender will also require your partner to be added on to the Mortgage). You are best therefore to speak to your Lender first of all.
Subject to the above, it is pretty easy doing the rest of what you want to achieve. Upon adding your partner's name to the Deeds, you can agree that you own 2/3 and our partner 1/3. You both should then make a Will, leaving your respective shares to your children, but adding a proviso that the remaining party is entitled to remain living in the property for however long they want/until they die. This is pretty standard stuff for a Wills Solicitor to do.
I hope this assists and sets out the legal position.
That's good news.
You still have to officially apply and ask Santander for what is called a "Transfer of equity form". Once Santander have approved the application, you would then need to instruct a local Conveyancing Solicitor to prepare the Land Registry Transfer document, which will transfer the Deeds into your joint names. As far as Santander are concerned, both of you will own the property jointly and both of you are jointly liable on the Mortgage, however your Solicitor will make sure that the Transfer shows that you own a 2/3 share and your partner a 1/3 share (Santander will NOT be concerned/need to be notified on how you both hold the property). The Solicitors you use will normally also have a Wills department, and you can ask their specialist to deal with your Wills also.
Hope this helps.
Your Conveyancing Solicitor is likely to charge around £350 plus VAT, and there will also be a Land Registry fee of approx. £40.
As regards ***** ***** these are likely to cost approx. £350-400 plus VAT.
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Sorry to hear that.
You could get a local Solicitor to draw up a Trust Deed to say that although you are the sole legal owner, that you hold a third of the property upon trust for your Partner. This would give your partner some comfort, but as you would still be the sole legal owner, you would have to make sure that you also prepare a Will leaving the one third share to her. From your partner's point of view, as her name would not be on the Deeds, she can't "leave this one third to her children" so it would be best for your Will to say that you leave the one third to her, but if she has died before you, then this share should pass to her daughter.
You can of course review matters in the future once your IVA is no longer an issue for Santander.