You will have 6 sittings, each of 10 days duration, to pass all of the exams. How you arrange exams between sittings is entirely up to you, or more likely to your ATO, which has to recommend you for the examinations, having first checked that you have completed all of the elements of the 100 hours theoretical knowledge training course to a satisfactory standard.
The fact that the UK CAA continues to impose requirements in excess of the EASA Regulation, which it clearly fails to understand, should surprise nobody.