US filings from the UK: what are the risks?

The IPKat doesn't know the answer to this reader's query, but he bets that some of his clever readers do:

"Do any UK firms who employ US IP attorneys file US trade marks, or provide copyright or other registration services in the USA for UK or other clients? If so, what attitude do the firm’s insurers take, and are there any extra risks of exposure to litigation that might not be covered by the PI policy? Any ideas or thoughts would be much appreciated."

If you know the answer to this question or have any bright ideas regarding this subject, can you please email the IPKat here or post them below?

Right: it was a simple filing programme, the only risk being that of getting caught during office hours ...