No they are not. You will not be able to claim against any compensation schemes (including the Dutch scheme mentioned below) if the investments you make through the platform do not perform, meaning they do not make payments or repayments in line with your expectations.
Triodos Bank NV is based in the Netherlands and as such, for some of
our products and services our UK investors are covered by the Dutch Deposit
Guarantee System or the Dutch Investor Compensation Scheme, rather than being
covered by the Financial Services Compensation Scheme (FSCS) in the UK. Banks
established in the Netherlands are subject to the strict supervision of the
Dutch Central Bank, De Nederlandsche Bank (DNB).
Your money will be held by our custodian in a client account and subject
to separate protections applicable to credit institutions and banks before it
is invested once the proceeds of that investment are returned.