Yes. After the regal copper issues in 1806 and 1807, no new copper coins were minted until 1821, causing a shortage. There was a huge increase in the price of copper through the Napoleonic wars, reaching a high around 1810. This explains why regal issues of 1806-7 are lighter than 1797-9. Also, the demand for copper coins continued to increase due to changes in society.
Around 1811 a new wave of copper tokens began to be issued, peaking around 1812. Many fraudulent pieces were made. In 1817 the government declared these tokens would be illegal from the start of 1818, but a few exceptions were allowed, particularly for Birmingham.
In the first wave in the 1790s, the vast majority of tokens were halfpennies. In the second wave from 1811, fizzling out by 1819, there were a large number of pennies. I have a Birmingham 1813 copper 3d token, which is quite a lump of metal. Bell states this was the heaviest copper coin in circulation in Britain. A few specimen 6d copper tokens were made weighing about 5 ounces! Bell states ( in 1964 ) that only seven are currently known to exist. During this period there were also a number of silver tokens, which are interesting but expensive to collect.