I agree with Alan. Its not a big problem, howver you will generally find that RORO is slightly more expensive than containerised. If you can squeeze it in to a 40 ft open top that is probably the best way. Peters and May are a good freight forwarder. These people are generally better than going direct to the shipping lines as they have massive volume discounts with them.
Remember that you are better to take out your own insurance policy rather than a shipping lines one. Peters & May should be able to tell you what is covered, but in our experience , it is hard to get much out of the shipping lines for damage & delays etc. If you read the small print with the shipping lines they tend to limit liability for most things unless they are lost completely!