Is an updated floorplan needed?

In 2018 we purchased a first floor flat, which was a new build at the time. The floorplan that was initially on our lease was incorrect (it was missing an internal wall, and a built-in cupboard was in the wrong place). The developer/seller then provided an amended floorplan that now showed the internal wall, but it did not update/correct the location of the cupboard. Our solicitor at the time said that as this is a minor error, it's sufficient for a side letter to be attached to our lease where the developer states that the location of the cupboard on the floorplan in the lease is incorrect. We went ahead with our purchase with this arrangement.

We are currently in the process of selling our flat, and our buyer's solicitor has requested that we send an updated floorplan to the Land Registry. Is this a legal requirement? From other answers on this forum, it seems like such minor changes do not necessitate the floorplan to be updated on the Land Registry. Please advise on whether this is the case; and if we *do* need to update the floorplans on the Land Registry, also please advise on how we can go about doing this.

Thank you!

Reka - what's a legal requirement or not is for the solicitor(s) to decide. If a new lease plan is required/drawn up, and the lease varied as a result, then an application needs to be made to register same
Solicitors can vary in their approaches to such matters and so too can any mortgage lender involved but very much for them, not us, to decide what's required legally in such cases
An updated floor plan on it's own would not be sufficient hence reference to a deed of variation to essentially replace the original plan with a new one and all the other details remain as were