That doesn't really answer the question though. Is all the effort to create a fake 1 GBP coin worth it? Unless you have access to the right equipment, I can't imagine it is based on the effort to make each coin.

If you can make 8x1 GBP coins a hour, then you clear a cool 64 GBP each day. Better than nothing (and tax free!), but there are a lot of jobs that pay better than that.