The balance of the 225 red RFs were delivered in early 1953, enabling the replacement of the last pre-war single-deckers in London (with the exception of the 10T10 class, which had to await the double-decking of the 205 at Edgware in May 1953).  The new buses were faster than the buses they replaced, enabling enough buses to be squeezed out from the schedule later in the year to convert the 254 at Loughton.