You don't mention where you're shipping from, but I'm assuming Australia. Three points to make:
1. Given a choice, I think London will be less expensive than the European ports for sea freight. See the following note on this topic.
2. Sea freight does take 6-10 weeks, though, so if time is critical, send it by air.
We have a positive report on shipping by air using Lufthansa from Melbourne into Brussells.
3. We have always just uncrated the bike (helps if you have a crowbar, but if not, you can usually borrow one at the port), reassembled it, and driven it away from the port or airport, though we have no experience of doing that in UK / Europe. My expectation based on living in the UK for several years is that they will be easier to deal with than Europe.
If they give you a hard time (sometimes their union or safety regulations are a problem), tell them you were given assurances by the agent at the other end that this would not be a problem. They won't be able to check anyway!
Good luck, and let us know how you go.
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