Total of £1.4 billion will be spent as part of UK's first space defence strategy

https://www.dailymail.co.uk/news/article-10466323/Defence-chiefs-spend-1-4bn-new-tech-stop-space-war-Vladimir-Putin.html

Now we have one (thanks to yours truly).

I was getting an energy pulse into/through my home for almost all of January ...

"a one-step technology that can create porous 3D graphene micro-electrodes with high electrical conductivity by irradiating femtosecond laser pulses on the surface of the leaves."

(laser) pulses = "create porous graphene micro-electrodes"

https://www.veteranstoday.com/2022/02/01/how-to-convert-fallen-leaves-into-micro-supercapacitors/

The supplier in the UK of the decent air ionizer couldn't supply ... :(

Alt model (after a lost morning trying to find even one competitor to this product; can't be done).

GBP £29.99

https://www.amazon.co.uk/gp/product/B00L3OZX2C/

It's silent (2 db as opposed to others at 20db+).
It's (only) an ionizer (least other unnecessary EMF generated, e.g. by other models with spinning parts, like fans).
It has a UK plug.

If you're thinking of buying, be mindful of the wall socket (cheap) ones; an ionizer should be placed on a surface or shelf in the middle or upper part of the room (not at wall socket height).

Only one warning;

Ion Output: MAX 500,000/cm³
Ozone Output: 5 mg/hr

Note, it also outputs a little ozone too.

The only possible comparable model (cheaper) is this one (read all the rubbish reviews);

https://www.coopersofstortford.co.uk/ioniser-air-purifier/?SKU=G255&src=gbase&vsrc=igb9b2

= a waste of money (and not soundless, with fan).

Nevertheless, if you get the heavy mil syntel etc ... And want to experiment with Dr Duncan's suggestion that RANDOMLY generated negative ions pushed around the room = may be some defence you can start to build that works SILENTLY to generate the ions, as cheap as £30.00 (you'd then need to add a random timer and ... fan). I'm hoping I get clean air most of the time, and when under attack, that's when I switch on the added extra (normal; desktop) fan ... too. :)

If you wanted to get hacking, parts, very cheap for the ion generation bit;

https://www.amazon.co.uk/s?k=negative+ion+generator+module&i=kitchen&crid=JF4DHSD76VE1&sprefix=negative+ion+generator+module%2Ckitchen%2C37&ref=nb_sb_noss