No. Your new spouse will not pay for your child. That is for the parents to do.
By filing for child support.
No but your mother can. The child support goes to her and not you.
Contact Law, in the UK, can put one in touch with a child support lawyer for free. Although it is not free, the National Association For Child Support Action (NACSA) can provide help for those at any stage of the child support process, at reasonable cost.
Yes, but don't expect the UK to honor your access rights.
No, only the NRP is responible for Child Maintenance.
Everyone who is not the biological parent or adoptive parent.
In the UK it is your responsibility to file a tax return if you think you may owe tax but you won't have to pay any tax on child maintenance payments you receive in the UK. Similarly in the US The person paying child support cannot deduct those payments on a tax return and child support is not included in the income of the person getting the payments.
That depends on the child support order. In most places, child support continues until the child reaches the age of majority. Some may require continued payments through the college years if they attend.
You need to contact your local child support office/agency (or an attorney well versed in international child support arrangements) and they will initiate the process. They know all the ins and outs of getting support ordered. You may have to go through a paternity test if he requests one.
Assuming he is the biological father there should be no problem.
UK charity Christmas card are sold in support of many charity organisations with the profits going to mental support,child deafness,lifeboats,cancer support hospices and many others.the recycling of these cards is also used to raise funds for environmental groups.
Some websites helping the fight against child abuse include Safe Network, Prevent Child Abuse, Child Abuse, Young Minds, Parents Protect, Stop if Now UK, and Child Help.