Thats alright, im not known for being very clear...
It is my thought the delay was waiting for the decision wether or not the system was to be updated. Now that decision has been made, the delay has been extended due to waiting for the manufacturer making a defunct product for this batch.
If we say the decision was made not to go ahead with the updates in ~July, then these started to arrive a couple months ago - the new (old) product was ordered, then the time to make that old product, for the whole batch, its substantial.
But it is little things like this that cause delays.
It explains why before entering service, every batch of buses goes to Seafield and sits there for between 2 weeks and 2 months, waiting on AVL's. They need to manufacture a product that they havent offered for years - its a custom order.
Other operators are able to order a bus and press it into service as and when required, because the manufacturer of the vehicle can just install it. Whereas we're fighting with the antiquated system, it takes longer. The bus is built, sent to us and we install the systems.
Thanks for the answer. Probably a daft question - but can the AVLs from withdrawn vehicles not be reused in new vehicles or is it just seen as more prudent to install new equipment in new vehicles?
I recall when I first started driving the company I worked for had a small batch of 61 plate E200s delivered late one morning in September - the first one was out in service the same day as quick as they could get the ticket machine wired in and some vinyls fitted!

It must be quite frustrating for the company to have assets sat depreciating for months waiting on obsolete (albeit very useful) equipment. I imagine it won't be this side of 2021 that we see any out?