Checking for financial assets/bank accounts after death

[custardbear]

Hi
My mum died a few years ago and her partner died last year. Due to Covid he appointed the will solicitor as the executor in a codicil.
It seems that since my mum died lots of money has gone, which is fine as it was his money, however, the solicitor has been trying to say that there is now more money than when my mum died which I know isn't true.
Is it easy to appoint someone to in the UK to investigate the finances for my step dad when he died, and possibly my mums too in case she's got old bank accounts, just to check there's nothing 'missing' from the final round up of all assets? we (all kids) are in the UK and they were in Australia
Thank you

Anyone?

Your question isn't really very clear. You say there's more money than you thought but still want to look for other bank accounts?

There is apparently a free service through www.mylostaccount.org.uk which should help you.

You say your mum and stepdad were in Australia, we’re all their assets/accounts in Australia too? If so you probably need advice from an Australian lawyer. Or are you trying to track down any uk assets?

Have a read here
moneysmart.gov.au/find-unclaimed-money

I read that the wrong way round. Thought they were in the UK and you were in Australia. There should be an Australian version though.

Thank you all - yes we're UK and they were Australia. They actually may have accounts in the UK so will check too.

The solicitor was made executor and we don't trust her. My mum had lots of money but that seems to have gone missing - may have been spent by stepdad in the 8 years since she died which is fine, but unusual for him. but I'm unsure of the solicitor as she seems far too invested (spent many hours at his hospital bedside, was very unprofessional talking to me about him, I kind of wondered if they had a romantic relationship to be honest) - thank you all for responding much appreciated