Who knows? Define 'bulky' and then provide some proof.
The burden of (b)the delivery, collection, loading or unloading cannot reasonably be carried out in relation to those premises without the vehicle being parked as mentioned in subsection (1) is heavy, and for a good reason.
There's no mention of any time imperative or constraints in this case AND the OP was clearly fit enough to drive in the first instance.
If the OP thinks they're entitled to rely upon the exception and could persuade an adjudicator to their cause at a hearing with their limited credibility and objective evidence then they should carry on.
