In England and Wales, there’s a Probate Registry fee of £273 and copies of the Grant of Probate cost £1.50 each.
You may also choose to place a ‘Deceased Estate Notice’ in The Gazette to avoid being personally liable for any estate creditors that come forward at a later date. The cost of advertising starts from about £80.
In Scotland, the court fee is tiered:
Free for estates worth less than £50,000
£276 for estates worth £50,000-£250,000
£554 for estates over £250,000
There is also a £20 fee to appoint an executor and a special type of insurance policy to buy  if there is no will. For more help with Scottish Probate, visit our partner site.