I'm interested to see that G&W, Headley and, apparently, Heritage all use ERS as the underwriter. I've been with RH for both my classics for the last couple of years. They would appear to be the "retail" version of ERS, they even answer the phone ERS.
I know the brokers all specify they own bespoke policies, but I'd suggest a quote from RH is worth considering:
rhspecialistinsurance.co.uk
