Yes but that's just the page you sign, see the very first line re accepting special conditions 'which are attached to this offer' , you need to read the other pages of the loan offer in conjunction with what you signed, they will show what you actually signed up to.
Normally customer gets a copy of loan offer in the post on approval with all the details, solicitor gets another copy with a pack of legal stuff for them, when you meet the solicitor you go through the info and sign their copy of the loan offer. If you kept your docs then you should have an actual copy of the loan offer addressed to yourself.