Rod Stradling has written a history of ECMW, you can read it here (click on the image).
Addendum:
2018 was indeed a repeat of 2017 in Abbotts Bromley
2019 Croston, Lancashire – organised by Brian Read and Committee
2020-2021 – Cancelled due to Covid-19 pandemic
2022 Croston, Lancashire – organised by Brian Read and Committee