Smart meter tripping RCD anymore than anecdotal evidence?

The plan was to have a set up like in this video, but this is the post-Brexit UK in the middle of the Coronavirus pandemic at Christmas and whilst we are told to use Type A RCDs the 100 mA S-Type time delayed RCDs are something that I have never actually ever seen or used and are not readily available, I am on a promise that I will get some, but I do wonder if they will actually arrive as they are on back order and I suspect they are not even in the UK.

So I went for plan B, a 300 mA RCD in the tails, which was not the best of plans, however the IET Onsite Guide tells us we can omit the upfront RCD if it is an RCBO consumer and is well engineered, but there is the additional issue of the SPD connections, I have ended up over sleeving the SPD phase connection to its MCB with heat shrink and replacing the upfront RCD with a main switch.

The plan was to have a set up like in this video, but this is the post-Brexit UK in the middle of the Coronavirus pandemic at Christmas and whilst we are told to use Type A RCDs the 100 mA S-Type time delayed RCDs are something that I have never actually ever seen or used and are not readily available, I am on a promise that I will get some, but I do wonder if they will actually arrive as they are on back order and I suspect they are not even in the UK.

So I went for plan B, a 300 mA RCD in the tails, which was not the best of plans, however the IET Onsite Guide tells us we can omit the upfront RCD if it is an RCBO consumer and is well engineered, but there is the additional issue of the SPD connections, I have ended up over sleeving the SPD phase connection to its MCB with heat shrink and replacing the upfront RCD with a main switch.