As far as I can tell, it’s not possible to invest in the cheapest all country global equity fund on Investengine.
State Street SPDR MSCI ACWI UCITS ETF (ACWI) has an TER of 0.12% (r This makes it 3bps cheaper than the Invesco FTSE All World (0.15%) and 10bps cheaper than the Vanguard FTSE All World ETF. It is also listed in GBP on the LSE.
Of course, it would be even better if Investengine allowed investors to purchase WEBG (which has a TER of only 0.07%). But understand this won’t be possible since it’s not yet available on the LSE.