Me too (a bit confused)....All these certificates may not be necessarily required with a standard/straightforward 10 year ILR application esp.Returned supporting docs inc. bank statements, all academic certificates, pay slips, employer letter and land registry certificate. Hope this helps.
1. All Academic certificates: A lot of my friends who have applied for 10 year ILR have either not sent any or only sent Academic certificate of the last College they had (or are still) attending and not all (10 year) academic certificates with their ILR application(s)....
2. Pay slips - Isn't there a slight chance that sending pay slips of all jobs done in the past perhaps even make HO start making enquiries whether a person may have exceeded 20 hours work limit in any given week in the last 10 years (if the person applying has spent all 10 years on a student visa)?
3. Land Registry Certificate: Again, not heard of many applicants sending this certificate along with their 10 year ILR application.
On the other hand, I suppose, no harm really erring on the side of caution and sending additional info. in support of one's application (esp. in certain cases which may require sending additional info. in support of their application)....