Investors in the UK are not partners in Vanguards mutual structure, and Vanguards UK platform ("Vanguard Investor") is not run by Vanguard but by a third party (FNZ, a New Zealand fintech).
OCF for VT, a global equity index ETF in the US, is 0.06%
UK equivalent (the Global All Cap Index Fund, or perhaps the VWRP All World ETF) is 0.23% and 0.19% respectively, and the latter excludes small caps and both have fewer holdings than VT
Invesco's All World ETF in the UK, tracking the same index is 0.15% and HSBC have an index fund tracking the same index also at 0.13%
Vanguard UK have a 0.15% platform fee whereas the best UK alternatives are completely free.
Vanguard UK recently introduced a minimum nominal platform fee on top which screwed over small investors.
Vanguard are no longer cheap and not on our side.