Depending on the thematics and neutrality of your content that you want to create, I would suggest adding an additional category of .edu and .gov.uk for the UK market. I actively look for and write in .gov.uk sites and this makes up about 5% of my Root Domain link profile. Not sure these days how Google determines the domain link quality of an academic and government sites but pretty sure they are still deemed as being of high quality and trusted.
Granted these types of domains are tricky to get content on but worth trying out.
David