Just to add my opinion, 60-80K is an expected decent/common salary for an experienced programmer across EU (UK salaries are higher). Programmer salaries above 100K are very uncommon outside a few companies and US/UK.
Keep in mind that you'd probably need to be contractor to work for the company (as it costs money to get employer of record, never mention employer contribution) so you should give that amount a hefty discount.
In UK there are very few companies that hire above $100K: mostly hft, gambling, fintech and subsidiaries of US companies. Almost all other UK tech companies hire senior developers for 65K-75K GBP.
At the same time both job security and work life balance will be very different experience.