Ok...I finally got on the laptop (earlier posts were from phone so please excuse spelling and grammar!!)
This is what ive ordered for the back.
http://www.partsbase.net/part/bir-5702 (Fsm 2029 equivalent)
And this is what ive ordered for the front.
http://www.partsbase.net/part/bir-5772 (Fsm 2028 equivalent)
Links to buy them
http://manodalys.lt/product.php?id_product=1056980169
http://manodalys.lt/product.php?id_product=1004540169
4.38Lt = 1GBP as of today (shipping is 22LT only!!!)
Works out at 53£ for you guys or 67€ for me for the 4 bushes at your door.
The guys there get back to you immediately by email...really good.
Ill post back with measurements when they arrive.
Marty.