https://www.expert4house.com/en/smart-home/smart-switch/tuya-smart-wifi-bidirectional-energy-meter-with-clamp?srsltid=AfmBOorl6-BwsRxUXUAWE8tlMjaOFvAmzLB1NReQqofl9WBI9XIVKbQA – Tuya Smart WiFi Bidirectional Energy Meter With Clamp – for high powered devices £30
https://iotawatt.com – interesting energy monitor tool
https://www.argos.co.uk/product/7359596?clickPR=plp:4:11 – Tapo P110M 4-pack MATTER- Certified Smart Energy Plug £35