@Queenjuliana This is a bit anoraky and long but I feel you should be aware:
FSMA 2000 defines financial crime as any offence involving - Fraud, dishonesty, misconduct in or misuse of information relating to a financial market or handling the proceeds of crime.
If we go with the example that the GFM page potentially has donations from criminal activity, this would be considered 'placement' (how criminal money is mixed with regular funds) and then the money is invested/reinvested in various different accounts, properties, assets or schemes, over and over again, making it hard to trace (layering) and then integration where the money ends up in ordinary/legal transactions. A GFM page can be used for the placement and then integration elements of this definition and I'm sure they have many rules/regulations in place to reduce/stop potential of Money Laundering.
If there is a strong potential that the GFM page has received proceeds of crime (individual donations from anonymous people) then you and your DH are involved and you must acknowledge the suspicion of money laundering activity. The law only requires you to report on a 'reasonable suspicion' - you do not have to KNOW; only suspect.
Acquiring - using or having possession of property which you know OR SUSPECT are the proceeds of crime
Arranging - entering into or becoming concerned in an arrangement which you KNOW or SUSPECT facilities the use of criminal property
Concealing - disguising, converting or transferring from the UK, property which is the proceeds of crime.
So your DH would be guilty of acquiring (by taking the money from the GFM page), guilty of arranging (having been instructed by his friend to do something and guilty of concealing by converting the £ to euro and transferring it out of the UK.
This is all under the proviso that the GFM donations include criminal proceeds which you do not KNOW, but you could SUSPECT.
Failing to report suspicions could be 5 years imprisonment and unlimited fines. Tipping off someone is up to 2 years imprisonment with unlimited fines (this means if your DH were to say to his friend 'I don't want to do this for you anymore because I think money laundering is involved' as he has alerted his friend that people may be aware of criminal activity)
Assisting in Money Laundering - up to 14 years imprisonment and unlimited fines.
So your DH could (if proven that the GFM page has criminal funds) get 14 years for assisting and you could get 5 years for failing to report. All because you SUSPECTED but didn't KNOW and failed to report it.
I acknowledge that all this is very hypothetical and in the scheme of things, very unlikely but you really don't want to be fucking around with Anti Money Laundering shit.