Hi thanks for your question. My name is Tony, I can assist with this.
Are there any provisions in the lease at all to pay a service charge? (this would be unusual if you have all the obligations to maintain).
Then you wouldn't have an obligation to pay his maintenance fees etc., if there is nothing in the lease requiring this. As you say, if you have the obligation to maintain etc., then so long as you're actually doing that, I doubt there would be a circumstance in which the landlord could ever seek the money from you.
Well if this isn't in the terms of the lease that you have with them, which is usually done through the service charge, then they're not likely to be entitled to ask for this from you.
Can you tell me whether I've answered your question please or whether you would like more information on this?
Nope, they cannot. They have to have a legal basis to charge you, and that's usually the lease.
Being the "new owner" is simply not enough.