National Grid dividends not received yet

[Rygel]

For now T212 only pay cash when it comes to SCRIP Dividend.
Below is their latest feedback on this:

Stock distribution is Now Available 2 questions GSK and Scrips

Hey, Еligible shareholders can expect shares instead of cash in all of the following corporate events: merger, spin-off, acquisition. When it comes to SCRIP Dividend, you can expect the cash equivalent as per the terms of the event.