While Pip is anxious for Estella's arrival in chapter 32, what unusual experience does he share with Wemmick?at does this possibly tell us about Wemmicks?

While waiting for the carriage, Pip meets Wemmick who is on his way to Newgate prison to conduct some business. Pip goes along with him. The prisoners are friendly with Wemmick, even offering to send him presents before their executions. This suggests there is more to Wemmick than meets the eye. The criminals need Wemmick as much as Wemmick needs them as his livelihood.