Jemma Rundle, a spokeswoman for the Rock, says: "We've made no announcement on changes to new lending.
They said it was important that there was communication between the three administrations before any announcements on proposed changes to jointly owned qualifications.
"Whilst we understand your wish to ensure that there are high quality qualifications in England, your announcements on proposed changes to what are jointly owned qualifications highlight the interdependencies between our respective jurisdictions and the importance of continuous communication," the letter said.
"We'll make announcements on policy changes when we have announcements to make".
7.30pm BST: Darling confirms the government will make a historic announcement tomorrow on changes to the banking system.
The announcement builds on changes revealed in April, with a notable exception that the scheme will not require 52 weeks of work from participants to receive full welfare payments.
Amid ongoing embarrassment for the coalition over the surprise budget announcement of changes to VAT on hot takeway food – dubbed the "pasty tax" – Greggs' chief executive, Ken McMeikan, said the chain was inviting its 6 million customers to sign petitions at its 1,600 UK shops from Friday.
But an expected announcement of changes in the military hierarchy failed to materialise on independence day.
A search of the Web site of the NIH Office of Extramural Research using the search term "climate change" identified two funding announcements: one on emerging infectious diseases and one on behavioral and social research on disasters and health.
The outcome was very successful, including the "U.S.-China Joint Announcement on Climate Change," a landmark moment after years of international climate change negotiations, bringing a bright prospect to the UN Climate Change Conference in Paris at the end of 2015.
