In Germany one gets married at a register office, and a church wedding is an extra.
In the UK, one gets married at a register office, or in a church, or in various other places – the paperwork can be done at any.
But the law varies between the three jurisdictions: England and Wales; Scotland; Northern Ireland. Scotland has traditionally offered a wide range. I did not realize that it is the only UK jurisdiction, and one of only six in the world, where a humanist wedding is legal.
Thus reports Fiona at Divorce Survivor.
See also Your big Day! – tips for planning your humanist wedding in Scotland.
I don’t believe the kilt is obligatory.