CALCULATION OF DAYS OUTSIDE THE UK IN ILR APPLICATION it will be grateful if you could share with me the working guideline for UKBA case workers of detailed calculation of days outside of the UK and supporting evidences required to make claim under special circumstances.

Dear Sir or Madam,

ILR applicants under WP/HSMP/Tier 1 are only permitted a limited
amount of days absent from the UK during qualifying period (5
years). However, the exact calculation method is not clear for me.
I have been trying to phone the UKBA get a definitive answer on the
actual total number of days permitted, however I received many
different answers, varying from 90 days to 450 days.

Therefore, it will be grateful if you could share with me the
working guideline for UKBA case workers of detailed calculation of
days outside of the UK and supporting evidences required to make
claim under special circumstances. Specifically, I would like to be
clarified on below points:
1. Maximum days allowed during 5 years and 1 year prior to ILR
application;
2. Maximum days allowed during 5 years and 1 year prior to ILR
application to be able to use PEO same day service;
3. Are weekends and public holidays excluded from out-of-country
calculation?
4. Different calculation methods between business trips and
personal trips;
5. How is A DAY ABSENT FROM THE UK defined and calculated? Same day
return journey (leaving and returning to the UK on the same day)? 1
night away journey (leaving UK on day 1 and returning to the UK on
day 2)? A day/night lost during long-haul journey or by sea (return
journey starting on day 1 and physically arriving in the UK on day
2)?

Yours faithfully,

Tong Yang