2d collision not working?

Hey all,

I've got two game objects, each with a rigidbody2d and a box collider2d. Set to kinematic, both on a default layer. But for the life of me I can't get them to collide with each other.

'MovingObject' script below, attached to the Photon (the movable game object). The other object, 'Wall', doesn't have an attached script (although I have tried it that way around — and also tried giving it to both) If anyone could give me some pointers I'd really appreciate it... :/

edit: Maybe I should add that if I untick 'is kinematic' for the 'photon' and play the game it falls on top of the wall and collides with it (it bounces continuously after collision).

 using UnityEngine;
 using System.Collections;
 
 public class MovingObject : MonoBehaviour {
 
 public GameObject Photon;
 Vector3 pos;                                // For movement
 float speed = 5f;                         // Speed of movement
 
 void OnCollisionEnter2d (Collision2D col)
 {
     Destroy(col.gameObject);
 }
 
 // Use this for initialization
 void Start () {
     pos = transform.position;        // Take the initial position
 }
 
 // Update is called once per frame
 void FixedUpdate () {
     if(Input.GetKey("up") && transform.position == pos) {        
         pos += Vector3.up;
     }
     if(Input.GetKey("down") && transform.position == pos) {        
         pos += Vector3.down;
     }
     if(Input.GetKey("left") && transform.position == pos) {        
         pos += Vector3.left;
     }
     if(Input.GetKey("right") && transform.position == pos) {
         pos += Vector3.right;
     }
 
     transform.position = Vector3.MoveTowards(transform.position, pos, Time.deltaTime * speed);    // Move there
     }
 }