Please, don't use "Hi" when writing formal letters. It may as well be signed "with love and kisses". Use Dear Sir (or the name of the person) and sign with Yours Faithfully (if you don't know the person) or sincerely (if you know the person).
These are not your "mates" or friends. They are out to scam you out of hundreds of £s.
I note you are also seeking advice on the advice you've received here from us over on the MSE forum.
This will never reach a hearing and will be discontinued in due course. What we are trying to achieve here is extra work and expense for DCB Legal and their intellectually malnourished employees.