NYC is 40.7’ North, Toronto Canada is North 43.7’, London is 51.5’ North and that’s the southern part of the UK.
You can also look at Spain - the CfDs aren't really comparable since the way CfDs are used there is different but LCOE is probably in the 40s-50s EUR/MWh for new build solar PV. But there are now meaningful curtailment issues in some places due to grid capacity there so developers will probably be working to higher numbers.
One issue for significantly higher UK solar production is they use more electricity in the winter. January 2023 was 26 TWh where July 2022 was only 20 TWh which is the opposite of solar’s peaks.
They can import from France, but France also has higher demand in the winter: https://www.statista.com/statistics/1107089/electricity-cons...
It’s only when you’re far enough south to see significant summer AC demand that it flips.
For reference on new build, at the UK government's most recently completed CfD auction (which happened in September), the solar PV bids accepted were at £47/MWh, CPI indexed and specified in 2012 prices: https://www.gov.uk/government/publications/contracts-for-dif...