thank you. The starting point is that a landlord and by extension a landlord solicitor is under no statutory or contractual obligation to supply the information requested in an LPE1 form letter because they have raised a charge in order to do so whereupon there would be a contract is between you and them for the supply of information.
Absent the above, the landlord and by extension solicitor cannot be compelled to provide the information requested and therefore you need to consider treading lightly in terms of any demands or requests you make.
Not withstanding the above, it is quite permissible for you to attempt to contact the landlord solicitor directly. There is no prohibition in terms of their being able to talk to you. equally, there is no obligation for them to talk to you.
If you are not able to obtain the information either at all or in a timely fashion, you may will need to discuss with your solicitor the alternative of providing an indemnity insurance policy for absent landlords which despite the name also covers a situation where the landlord is not responding to enquiries and potentially offering a retention to be held for a period following completion to enable the buyers to obtain the necessary information to satisfy themselves that there are no arrears owing.
In respect of certain information requested, you may be able to provide this yourself by reference for example to a recent ground rent demand or service charge account which you may have presumably received from time to time from the landlord. I do not suggest this is a replacement for the information that has been requested but in circumstances where it is not been provided, it can and these provide the buyer with some comfort