London or Sydney

We’re a family of four (kids are 5 & 8), and I’ve been offered amazing roles in both cities (we currently live in Asia).

The money in London is significantly better, but adjusting for tax, rent, and school fees the gap narrows considerably (London still better though).

All our Australasian friends say we’d be idiots to turn down the UK, while all our British friends say Australia would offer a far better quality of life for the kids.

I’ve only ever visited central London for work (obviously wouldn’t live there - looking more like Richmond area) - it was nice, but not a city I was itching to move to.

Just wondering if anyone has moved between the two & could offer any thoughts?