I did chem, bio, maths and history for the first week of sixth form (only went to one history lesson) then I switched history with English lit and thank Jesus I did that. I'm now probably going to do chem, bio and English lit for year 13 as a medicine applicant. I realised I would be better suited to English because history can get very arduous and balancing that with sciences and maths would have been impossible for me. In English lit you learn not only English but history, psychology, sociological and philosophical concepts; it's very different to GCSE due to its versatility. I feel like the workload for history is crazy compared to English lit and I personally feel that English compliments science more. For me, it's a much easier subject than history. The only things you have to memorise are quotes from the book, critical quotes and contextual details. You'll really appreciate that when studying biology to which the content and workload is maaaad.
Think about other factors like the books you'll be studying in English vs the courses you'll be studying in history. Learning about Tudor England for a year did not entice me at all. Also consider the different departments in your school -- which is better? Which subject did you get a higher GCSE result in?