I want to know the answer to the following question:
By 1838 how many companies beside Claridge's were offering asphalt?
All the background I'm provided with is that ""By the end of 1838, at least two other companies, Robinson's and the Bastenne company, were in production", with asphalt being laid as paving at Brighton, Herne Bay, Canterbury, Kensington, the Strand, and a large floor area in Bunhill-row, while meantime Claridge's Whitehall paving "continue(d) in good order".". Is that enough to answer the question?