Second, that's not relevant, but is relevant to the rest of my comment. Trademark law does not bar two companies from having the same name. There are tens of thousands of companies with the same name. Most words have hundreds of separate listings in the trademark registry. Ever heard of Delta the airline, Delta the faucet company, Acme the laboratory, Acme the furniture company, Acme the grocery store chain, Apple the computer company or Apple the record label?

Trademarks are limited both regionally and by the categories of goods and services the marks are registered under. If there is no likelihood of consumer confusion, there is not going to be infringement. Moonpig's trademark is limited exclusively to "printed matter, namely, books in the field of humor, stationery, greeting cards, and calendars".