Metropolitan Railway
On 1 July 1933 , the Met was amalgamated with the Underground Electric Railways Company of London and the capital's tramway and bus operators to form the London Passenger Transport Board . 
<triplet> Underground Electric Railways Company of London <subj> London Passenger Transport Board <obj> replaced by <triplet> London Passenger Transport Board <subj> 1 July 1933 <obj> inception <subj> Underground Electric Railways Company of London <obj> replaces