Unfortunately the squadron movement is even more confusing that that list would suggest.
take for example 54 squadron.
although it was 'based' at Hornchurch, because Rochford and Manston were the 'satalite' airfields for Hornchurch, individual flights or the squadron as a whole were often despatched to these airfields for the day, returning to hornchurch at night.
some official records for 54 squadron from July,
heres a useful link to from which i got these and you can find quite a few squadrons operational records during BoB, just enter the squadron, year and month
http://www.oldrafrecords.com/
really interesting site, just wish it was more complete, its really great for mission building.