A present a flat fee of £215 applies. From April 2019: Up to £50K: no charge. £50K - £300K: £250. £300K - £500K: £750. £500K - £1m: £2,5K. The Min of Justice reckons 80% of estates won't pay more than £750. A rise of over £500! This is a stealth tax on death, not a fee to cover admin costs.
You may be interested in these active petitions
Probate fees should not help fund courts & tribunal systems. The proposed hike is unjustified.
https://www.moneyobserver.com/news/probate-costs-could-hit-ps6000-banded-fees-confirmed
https://www.accountancydaily.co/probate-fees-rise-ps6k-largest-estates
https://www.thisismoney.co.uk/money/article-6356603/New-death-tax-hit-grieving-families.html