A 30mb standard FTTC broadband service should be fine for Zoom and Sharepoint access.

Alternatively, so long as there's no gaming going on in the house, then a 4G/5G service would be fine (unlimited data about £30/month)

Your service, as everyone else has mentioned CANNOT be moved to a residential service, as what you had installed was a Leased Line, which is NOT in any way related to Residential FTTP (you aren't on the PON Fibre network, you have a Fibre direct to the exchange).

It is unfortunate, but as has previously been mentioned, unless you have in writing from your ISP that it could be converted to a standard FTTP, you really have no recourse,

You could (if you don't work for yourself) go back to the office to work until you have a solution in? Or could work pay for a portion of your broadband? I know this happens in some sectors.

Thank you to everyone who has given their input to this thread.
I've learned something from all this.
Fibre connectivity is not necessarily interchangeable.
To use an analogy, fuel for a vehicle comes in many forms, but all of them propel and or operate the vehicle, and the fuel is sourced in different ways but ultimately do the same job!
For clarity, I inherited this leased line installation from the person who had this set up (it was an installation for one of our directors homes)
Because it's coming up for renewal, my remit is to look into a cost effective solutions/replacement.
I now know that fibre comes in different forms, like computers. If you're unfortunate enough to have wasted your money on an Apple product, generally your now stuck with freely opening up your wallet to them unnecessarily.
I just threw that one in, because I know it will trigger some folks (just like the pronoun comment) )))

Why are you writing posts "that (you) know will trigger some folks" on a forum that you've come to for help?

Fibre connectivity is not necessarily interchangeable.

Physical fibre is pretty much never interchangeable. The provider that installs it owns it and it will pretty much never be possible to move from one provider (at the network level) to another.

OpenReach only install OpenReach fibre and will only use the fibre they installed - they then wholesale it to service providers to sell a service to the customer. This is the case for every physical network provider I can think of - it is also why in some places there are now 3 or 4 different fibre cables running to premises because different providers have networked up the area.

In addition, the fibre technology OpenReach install for leased lines is different to that used for FTTP and therefore they will not convert one to the other (technically they could but it would make a unique solution that would be more expensive to support).

I think the better comparison would have been Mac and PC. It is slightly different now but if you bought a Mac you could only run Mac applications and licenses were generally for the Mac version. If you bought a PC then you could run DOS, Windows and Linux type systems (and others, not going to attempt to list them all). If you bought an application for Windows you could only run it on Windows. If you wanted to switch from one platform to the other then you essentially started from scratch and even a lot of the peripherals were specific to a platform.

Whilst there is a level of lock in on the mobile world you can move from one Apple to Android and back (I have) but any apps bought for one platform would need to be repurchased and some apps are not available on both. Of course Apple also had there own charging connectors that weren't compatible with anyone else but that is changing. It's not really something to trigger most people, just a fact of life and most people stick with one platform or the other.

Not to pour cold water on this, but it sounds awfully like a walter mitty type situation here - Pheasant et al may be able to attest to this, as we've had similar posts before.

Reasons to believe:
- You mention this is a Domestic property, but you also mention it was an instalisation that was taken over from a previous directors home? Is this is a business property, are you the owner, is this for domestic use or business use?

- £355 month for a Domestic property connection for 100MB when you have a 30MB FTTC avaliable, for the classic £30 a month, means you or the owner either had money to burn et or were massively mis-sold something. But again, i can;t understand how you got to either conclsuion.

- The FTTPoD is what you are describing allows you to access the WBC FTTP at the end of the contract, but again this would of been clearly stated that you could exit after 12 months for example with cerebus and this has been the case for over 3+ years now.

I'm sorry if this is a genuine case, but you have spaffed £12,800 up the wall with clearly little benefit, and have not done research .

Depending on the company size it's pretty normal to spend less than £400 a month on making sure the director can reliably do a video call - three years ago has the service going in at the end of 2020 when nobody was sure how long remote work was going to be the only type of office work. There's no point paying a company director fat stacks, a job that mainly involves them selling the virtues of the business to others, and then not have them able to reliably do that for the sake of maybe £20 per working day.

In reply to a post by Whitehall11:

Not to pour cold water on this, but it sounds awfully like a walter mitty type situation here - Pheasant et al may be able to attest to this, as we've had similar posts before.

I did wonder and the comment about pronouns made it pretty clear.

You were thinking about https://forums.thinkbroadband.com/fibre/t/4735528-sw... among a number of other threads I imagine. I was, coincidentally, looking for some information on Openreach backhauling cabinets with microwave and for whatever reason that thread appeared in the Google search results.