Woofgang, the point I am making is that the LR will (I believe) deal with the registration of an asset (house) held as joint tenancy independent of whether there is a Will or not. That is how it may have happened without sight of a grant of probate being required by LR.
Whether or not probate is required for other purposes (for example to demonstrate the estate is not liable for IHT, which WILL need to include the market value of any property owned - in the case of my assumed scenario, half of it) is a separate issue.
If all the gentleman left was a share of a house and little else in assets in banks or other accounts, those bodies may not have required to see the Grant before releasing assets.
Its irrelevant and off topic anyway - the question is about the Will and the answer is no, but why irritate the estranged daughter by refusal.