Which cartridge in a Nottingham Analogue?

I think the Ortofon Black would be superlative...that's what I would do.

In the least you could do what I did and use a medium to high output MC cart. I have a Dynevector 20XH and use a MM phono pre amp. I am sure you get the idea. I think the sound is quite good but the real feinschmeckers will say it doesn't do MC the way the other good MC cartridge do. Ignore these naysayers and consider using one. What is choice of Phono stage, obviously make sure the phono stage has the option for MM which what I put my MC cart through. I use a Graham Gram amp 2 SE which is MM only, if want the option of true low output MC you'll need to pick another phono stage.

The late Tom Fletcher, designer of the Nottingham turntables and tonearms, was not a fan of MC cartridges and designed his tonearms to use MM carts. Based on weight, these arms generally work best with cartridges on the higher side of the compliance slope - I recommend a cartridge with a compliance value of 14 or higher.

Having said that, I have successfully used many MC cartridges with my Nottingham arms over the years. Being unipivot arms, tracking is always an issue. I have had very good luck with the Ortofon MCs and the Grado Statement and Reference MI cartridges. Based on experience I suggest that you stay away from low compliance cartridges like the Denon DL-103 series, among others.

Nottingham cartridges were based on Goldring and they sounded excellent in Spacearm.
I would definitely go with Goldring 1042, at least to begin with.It's $360 cartridge, if you get it from the UK. Some people use it in much more expensive set-ups.
I am about to unpack my Spacedeck/Spacearm and that's exactly the cartridge I am going to mount.
I was also recommended Soundsmith Carmen. Maybe later.
My phono stage is Acoustech.
As I understand, better Nagaoka might work well too.

I used a relatively lower priced Goldring ?1012? or the 1042, which came with the earlier MMF-5s (currently in storage) which had a very different presentation to Dynevector I mentioned above. The !042 sound is vert cohesive and pretty, but not the best for very fine detailed sound that the MC Dynevector has. It may be your cup of tea, if you aren't a big fan of highly analytical sound.