upgrading standard service to priorty service

[ir_mel]

Hi,

I made a Tier 2 application (switching from tier 4) on friday and I posted out my documents on Monday with next day delivery (so should be with them today).

However my sponsor is now willing to pay for the priority service but is it too late? I have posted my documents so even if get chosen to use the priortiy service my documents are at the standard application address?

I have emailed them but they might take a long time to get back or may not even respond to my query.

Please help, also I paid 609 for standard application do I just pay the difference (£300 approx) to upgrade to the priority service?

Thanks