The solicitor who helped me was a small-town solicitor. On our friend's recommendation, we got him to do the POA for DH.
He was utterly scrupulous - made sure to speak to Dh without my being there, to make sure there was no pressure etc.
DH's will had been drawn up by a bigger firm in Cupar. When the small-town solicitor emailed them to request the principal will - I only had a copy - they demanded £40. My solicitor's dry comment was "They must be short of cash."
He dealt with the sheriff court for me, but got me to go to the bank, etc myself. The first day I saw him, I'm afraid I was sobbing.
He dictated a list of things that I needed to do and made me write it down. He contacted the building society for me, to get the deeds of the property.
A lot of it is a blur now, but I recall the bank manager was lovely. She heard me trying to make an appointment at the desk and came out - told me she'd see me straight away. I got the invoice from the undertaker and she organised to pay that out of my husband's account. She didn't require the confirmation/probate - only the building society needed that.
The solicitor sent off the cheques to DH's two kids and grandchild for me, together with an official letter. (He actually objected to sending the cheque to the grandchild because she was't in the will, but I told him - truthfully - that he should say in the letter that it was my husband's verbal wishe.)
I sent off the parcels of personal effects myself, but had the solicitor's okay to put his return address on.
I'll add that the solicitor told me that the cost of the memorials should come out of the estate. Unusually, there were two - one at the crematorium and one up north at the family plot. DH had wanted his mum's name added to that and I also had his added because those at the crem are only rented. Delays caused by lockdown meant that sorting out the memorials held things up - once the solicitor was on it, probate was done in about 3 months, I think - but it was a year before the memorials were completely sorted out: the one at the cemetery took longest, I think.