Crack above bay window

[baywindow112]

Hi, looking for some advice on getting the crack above my bay window fixed.
I’ve added a picture of it.

One contractor has quoted me £300 for using hex bars to stabilise the wall and repoint it. Another has quoted £1790 to do the work and advised that extra work may need to be done on the lintel.

Obviously there’s a massive discrepancy between the two and I’m unsure about what I should be doing (apart from get more quotes!)

Any advice would be great, thank you!

 

[DiyNutJob]

Hex bar doesn't look very substantial. It might add some strength, but probably not very much.

HeliBar Reinforcing Steel Bar for Masonry Repair and New Construction | Helifix

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