I can't cope without them Mike!
I realised that the scuttle was barely connected to the rest of the body, so I bolted a couple of planks across the body, moved the rear section back a little, and lifted the scuttle off, having first removed the steering wheel and steering box. The rear section is quite light but a bit unstructured so I will wait until Friday when I am meeting some friends at the local lubrication centre (The Swan Inn) and will manage I'm sure to get them enthused with the idea of lifting the rear section off. The bulkhead had what is to me a novel connection - two parts bolted together gripped a flange around the fuel tank and its support. I cut off the nuts with the angle grinder and the bulkhead slid up quite easily.