Where the bonnet release would be on a LHD car there is a blanking plate. Looked well secure on mine, but there was a little leak from there. Should be easy to spot from above and seal up, but had to take out carpet underlay and dash to see it from the inside... Will be worth taking out the underlay if there is water in the footwell, it will be horribly smelly and rotten under the carpet... dry it all out and fit new underlay