There is no source in the UK unless you are a business. I have many sources in Europe and Asia but its not going to make it through customs. European suppliers won't ship to UK.
I'm deliberating packing up and going to a country I can get it , have a holiday and at the end ctb.
There are instructions to make it but the cooking process smells terrible and I can't take the risk.
My other plan is amytriptilene cocktail. I have the drugs.
Oh, and I did find something where you can use a company ineurooe to ship to and they pass it on via courier but again - customs. It is a controlled substance.
I'm happy enough registering a business to get it in the UK but they will probably check how long business has been going for.