In 1827 he moved to Tottenham, London, where he managed a branch of the family school business while Rowland taught.

He invented a mechanical system to make envelopes which was shown at the Great Exhibition of 1851, the patent for which was bought by Warren de la Rue to whom the machine was attributed.

On his retirement a Treasury minute praised Hill's "...resourcefulness and considerable mechanical ability which had contributed so much to the success of the new postage scheme".

[1] Hill was one of the signatories to the notice calling a meeting on 22 January 1817 to petition for parliamentary reform and he campaigned for changes to the law relating to the handling of stolen property.

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