Running a cross currency swap on a GBP issued 2.75% 7yr bond (i.e a bullet), with funding in USD so need to determine the equivalent in USD.
The GBP bond trades at circa 180bps over the Gilt.
Using bloomberg XCF function the USD equivalent is 3.8% implying a spread of 160 + Treasury. A difference of 20bps. The current (bloomberg as BPBS7) USD/GBP basis swap is 6.25bps.
What explains the other 13.75 basis points difference between the 2 spreads over their respective Gilt/Treasury?