Every year, EAG London tends to be held in May/early June. In the UK, >90% of your degree comes from performance on final exams. These take place from May to June, and the norm is to study for at least a month. This means many talented UK undergraduates might not attend EAG London because they are too busy studying. Since travel is no longer reimbursed for the USA EAGs from the UK, this means that many talented undergraduates at UK schools cannot attend any EAGs.
For example, I currently attend Oxford, and think >30% of the most dedicated undergraduates here do not attend for exam reasons.
I'm pointing this out as I'm hoping this factor is considered when deciding dates in the future.
Open to it for 2025, though looks like at least Oxford will still have exams then (exams often stretch until 1–2 weeks after the end of term). But early July might work and we can look into what dates we can get when we start booking.