In paragraph 10(1) (groups of dwelling-houses for persons of pensionable age) of Schedule 5 to the 1985 Act (exceptions to the right to buy)—
For paragraph 11 (individual dwelling-houses for persons of pensionable age) of that Schedule there shall be substituted the following paragraph—
Subsections (1) and (2) do not apply in any case where the tenant's notice claiming to exercise the right to buy was served before the day on which this section comes into force.
For the purposes of subsection (3), no account shall be taken of any steps taken under section 177 of the 1985 Act (amendment or withdrawal and re-service of notice to correct mistakes).