I have bought a few hundred pounds worth of both VERGE & TRON, not realising that the Ledger Nano does not support these coins. I understand that you should not keep anything on Exchanges.
Do you know where I can store these coins as safely as the Ledger & Trezor secure coins??
As far as I know, Tron is an ERC-20 token on the Ethereum network. This means a Ledger or Trezor, connected to an Ethereum wallet which works with ERC-20 tokens – such as MyEtherWallet.com – will indeed work with Tron.
As for Verge, running a desktop wallet and practising good computer security will be your safest option. It won’t be as secure as a hardware wallet however. Perhaps there is a good somewhere in the Verge community on creating a Verge paper wallet, which could increase your security to hardware wallet levels, at the cost of some convenience.