Sorry jaycee, have only just come back on line, Dog asked for a walk earlier , couldnt resist her eyes.
Morgage companies usually hold onto the deeds , as they are an interested party. You can ask them for a copy, but they charge an admin cost, it is cheaper to down load from Land registry.
Its such a small amount of ground rent, and if the freeholder was interested in collecting it I'm sure he would have been on your doorstep, asking for payment. I guess that your solicitor is more thorough than the last one. The solicitor we used, picked up on a few things and insisted that seller of the property purchased for our daughter paid for an insurance policy that covered damage caused by others properties, apparently its a one of payment . I guess its how good the solicitor is, . I dont think its anything to worry about , if the freeholder is like the one with dealt with an 'absent landlord'. I must say i found it strange that your neighbour collected the rent to pass on. Its usually down to the individual to pay direct. If the soliciter is adament of the freeholders whereabouts, let them search, but I doubt if they will bother over a small amount.