HT would have to apply for approval from the relevant authorities (which they would not get) for any Lead content... the UK banned Lead in paint for all products available to the general public in 1992.. the likelihood that HT does special batches for the UK is vanishingly small, so your figures also do not have lead in the paint.
Interestingly the 1963 agreement between the then Paintmakers' Association, now the British Coatings Federation, and the U.K. Government, not to apply paints containing lead, to surfaces accessible by children.. was
voluntary.
https://en.wikipedia.org/wiki/Lead-based_paint_in_the_United_Kingdom
Regular hand washing is a sensibly hygienic, lifestyle choice.. Trivia fact - a 'fist-bump' greeting transfers 90% less bacteria, than a traditional handshake.