Although the Isle of Wight is in the UK I would still recommend travel insurance. Covid-19 has brought this need to our attention. Even for staycations and just how much of a risk we take my not having any cover.
I would recommend visiting the sites below to find the best deal for yourself. I would always suggest trying a comparison website first such as Travel insurance saver (click name to access).
There are always merits for shopping direct with companies, some I can recommend from personal experience are:
Avanti at www.avantitravelinsurance.co.uk
Staysure at www.staysure.co.uk
Axa at www.axa.co.uk