The forthcoming hell debate on excess deaths is going to be over the time period of aggregation. Spiked already have several articles good-to-go arguing that over a sufficiently long time period, excess deaths tend towards zero.
(the odd pattern in the data for most recently published two weeks is, as ever, a bank holiday effect)
Covid deaths going above excess deaths is probably a sign that this isn't far off now. https://twitter.com/NickStripe_ONS/status/1267740295472582657
This is an interesting piece although it's a shame that the specifics of the harmonic regression employed (& uncertainty around estimates) aren't documented a bit more. I think it also points to another absolute hellfront in any coming excess deaths debate https://www.cebm.net/covid-19/covid-19-mortality-over-time-ons-update-2nd-june/