TwentyFour Select Monthly Income Fund is a London listed closed-ended fund which is designed to take advantage of the premium returns available from “less liquid” instruments across the debt spectrum.

https://twentyfouram.com/funds/twentyfour-select-monthly-income-fund/

It’s top ten holdings are:-

NATIONWIDE BLDG 10.25 PERP Banks 3.72% of whole fund
BRACKEN MIDCO 10.5 15/11/2021 High Yield – EU 2.63% of whole fund
SHAWBROOK GROUP 7.875 PERP Banks 2.54% of whole fund
COVENTRY BDG SOC 6.375 PERP Banks 2.28% of whole fund
SANTANDER UK PLC 10.375 PERP Banks 2.15% of whole fund
ALDERMORE 11.875 PERP Banks 1.83% of whole fund
ARBR 3X FR ABS 1.68% of whole fund
OPTOM 3 MEZZ ABS 1.67% of whole fund
BANCO BILBAO VIZ 8.875 PERP Banks 1.63% of whole fund
CBFLU 1 MEZZ ABS 1.56% of whole fund

http://www.shareshop.hsbc.co.uk/shareshop/security.cgi?csi=26656574

6.6% yield, paying 0.5p out a month.