Seeing a Solicitor to find out where you stand is not "going to court." They will give good advice as to the steps to take and will know when the best time to act is. If the mother has "blocked" the father, then to send presents, etc., can be seen as harassment. There is another thread on the forum where more than one person has been warned off by the police.
My son had to go to court to see his young son eventually but the first letter from the solicitor just asked if arrangements could be made to see him and pointed out what the parental rights were. Mum was advised to see her to get legal advice too. Within a month some access had been arranged but some of the demands of where the child could go were unreasonable so he ended up in court. It was difficult to start with but it soon settled down. Sometimes I think the solicitor's initial letter shows the seriousness of intent and the mother's own solicitor tells her what is reasonable. Sometimes people think they have rights they really don't have. Of course, in this case, the father could be told by his solicitor, he has no chance if he has behaved badly but at least he'd know. In our case I seem to remember the solicitor told us what to write first and if that didn't work, to go back.
To think that London, or anywhere else for that matter, does not belong to any one demographic
What Would You Do in this Position?