Assured Shorthold Tenancy Agreements

My landlords agents have sent me a S21 (Notice requiring Possession) and a
covering letter asking me what new contract I want (one choice including the
same terms). I am quite happy to continue on the existing contract and the
only reason I can think the agents have done this, is so they can try and
get more money from me for the leases etc. (I had to pay £50 or so for my
lease).

I am waiting for them to call back, but just wondered is this is "standard
practice" or just a way of conning more money from me? Should I consider
speaking to the landlord direct and get this S21 rescinded?


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