Not sure whether another egg was laid last night. It would appear that Mrs Great Tit has finished laying and has now started incubating her eggs.
Update - it looks as though there are 8 eggs and Mrs GT is still leaving the nest from time to time. If they all hatch (2 out of 7 didn't last year) it is going to be a very busy time feeding all those hungry youngsters.
Pollen gathering spiders
3 hours ago