My 1997 Plus4 is due for renewal. I used Footman James last year, which cost about £420 for an agreed value and 5000 miles. This year I tried Lancaster, they refused to answer the phone or respond to emails, website links did not work. Perhaps they have gone out of business? I am going with Footman James again. For about the same price.
Lancaster are still going, just insured my MG with them. Did it all online and uploaded docs using the Portal.